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| Sphere Research Corporation 3394 Sunnyside Rd. West Kelowna, BC, Canada V1Z 2V4 Phone: +1 (250) 769-1834 FAX:+1 (250) 769-4106 A great source for test equipment, repairs, calibrations, useful metrology information, and of course, SLIDE RULES!  JUST SCROLL DOWN  TO SEE EVERYTHING ! | |||
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 Information About Pickett Slide Rules Skip the INTRO, Go RIGHT to the CATALOG! The rare super-duper Pickett Bat-Case (not the official name), holds a large body rule (N3T/N4ES, etc.) and various other super-geek weapons...CLICK for a bigger PIC! Looks like it was made for Batman, only comes in black.   Pickett & Eckel, Inc., designed and sold
their slide rules by categorizing end users (marketing research)
and matching the type and number of scales, and subsequent price,
to those customers. Early literature provided a matrix of slide
rule model versus intended user group, from secondary school up
to the professional engineering community.
The following list is what Pickett & Eckel
(based in Chicago. IL) and later Pickett (based in Santa Barbara, CA) offered during their production as standard products, but does not include every custom rule. Model numbers initially had no suffixes, and were white, then later had suffixes of either "ES"
or "T" denoting Eye Saver yellow color or Traditional white, respectively. There were also a few rules made in "MF" clear Metal Finish, mainly as promotional rules. Later rules had an "N" prefix (new), and improved cursor design, along with square corners, and in some cases, slightly altered scale layouts.
Pickett listed their slide rules as 10 inch or pocket, but was
inconsistent as to what this measurement actually meant. A 10
inch rule was physically 12 inches in length, but the scales were
10 inches. The pocket rule was physically 6 inches in length with
5 inch scales. However, Pickett literature would refer to 10 inch
and 6 inch slide rules! At least one 8 inch model is known to exist (808-T), but rules longer than 10/12 inches do not appear to have been made.
The earliest Pickett metal rules were made with Magnesium alloy bodies (models 2, 3, 4, and 1000), but production switched to Aluminum in the 40's. Pickett produced many custom rules in both aluminum and plastic, including rules for accident scene skid estimation, aerial photography, purchasing, fuel sizes and weights, hydraulic valve sizing, and turbine engine analysis to name just a few. They also made some promotional variations with stock rules like the N200, with custom logos and colors, but the rule identification did not change, making for some confusion afterwards. There is at least one green rule known, a modified N200ES, with no special identification. Pickett also offered some circular rules including models 108-112 which are simply rebranded Japanese rotorules, also sold by SINCO (Scientific Instruments) in white, and marketed in the USA by Pickett mainly in yellow. They made their own 101C circular rule, but it is a very simple design.
Pricing varied by retailer, however Pickett
did offer demonstration slide rules in 4 foot and 7 foot lengths:
a 4 foot rule sold for $15 and the 7 foot rule was $25 in 1960. These
were available with scales to match models N4, N803, and N1010
with the Ln scale added. These large rules were available free
to schools which ordered 24 or more slide rules!
Thanks to Tom Whiteway, Craig Kilehofer, Dave Crate, Bobby Feazel and many others for help with rules, photos, and information. We all hope you like the results.
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N1010-ES ($12.95)
JUST SCROLL DOWN TO SEE EVERYTHING !
The full Pickett teacher's manual is now on line HERE for you!TO SEE PICKETT RULES FOR SALE (and more illustrations), CLICK HERE!
PICKETT B1  Click for BIGGER PIC
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12" / 10" Bamboo Powerlog Dual Base Exponential Speed Slide Rule. Bamboo construction (Pickett's only bamboo rule), made in Japan, and marketed in the USA by Pickett. Log Log scales are folded 80 inches long with a range from 0.00005 to 22,000. 20 inch square root scales. The LL scales are on both sides, along with the C,and D scales which are duplicated on both sides. Over-range extensions on C and D scales. (25 Scales) Front - LL1-, LL2-, LL3-, DF, [ CF, CIF, CI, C, ] D, LL3+, LL2+, LL1+ Back - LL0-, L, K, A, [ B, S, ST, T, C, ] D, Sqr 1, Sqr 2, DI, LL0+ Sold with a plastic lined leather case. |
PICKETT 2  Click for BIGGER PIC
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12" / 10" Deci-Log Log Slide Rule, Pickett and Eckel's first metal body rule, made with a Magnesium body. Normally supplied in a molded, rubberized case. Has 28 scale sections. Log Log, called N, scales are folded 80 inches long with a range from 10^ -10 to 10^ 10. 30 inch cube root and 20 inch square root scales. The N (log-log), and L, scales are all on one side, and the C, D, & CI scales are duplicated on both sides. (28 Scales) Back - N1+/-), N2+/-, DF/m, [ CF/m, CIF, L, CI, C, ] D, N3+/-, N4+/- . NOTE: The inverse N scales were marked 1/N. Front - Cube Root 1, Cube Root 2, Cube Root 3, DF, [ CF, T, ST, S, CI, C, ] D, DI, Sqr 1, Sqr 2. |
PICKETT N3T  Click for BIGGER PIC
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12" / 10" Power Log Exponential Log Log Duplex Slide Rule. White (T) coated aluminum construction, black and red scales, dual log scale design in one of Pickett's most powerful rules. This is a very sophisticated 32 scale rule, made in the trademark aluminum body format by Pickett, one of my Favorite Pickett rules, with a much less cluttered layout than the N4, without sacrificing important functions. Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (32 Scales !) Front - 2 sq. root scales, K, A, [ B, ST, S, T1, T2, CI, C, ] D, DI, 3 cube root scales Back - LL0+, LL0-, LL1+, LL1-, DF [ CF, CIF, Ln, L, CI, C, ] D, LL2+, LL2-, LL3+, LL3- |
PICKETT N4ES  Click for BIGGER PIC
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12" / 10" Dual Base Vector Log Log Duplex Slide Rule. Eye-saver yellow (ES) coated aluminum construction, black and red scales, dual log scale design in Pickett's most popular power rule set. This is a very sophisticated 34 scale rule, made in the trademark aluminum body format by Pickett. Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (34 Scales !) Front - 3 cube root scales, DF, [ CF, CIF, T, T, ST, S, CI, C, ] D, DI, 2 sq. root scales Back - LL1+, LL1-, LL2+, LL2-,DF/M [ DCF/M, TH, SH, Ln, L, CI, C, ] D, LL3+, LL3-, LL4+, LL4- |
PICKETT N4T/N4pT Boxed Set  Click for BIGGER PIC
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12" / 10" and 6" / 5" Dual Base Vector Log Log Duplex Slide Rule Set. White (T) coated aluminum construction, black and red scales, dual log scale design In Pickett's most popular power rule set. This is one of the famous Pickett 'Twin-Packs'. (34 Scales !) Front - 3 cube root scales, DF, [ CF, CIF, T, T, ST, S, CI, C, ] D, DI, 2 sq. root scales Back - LL1+, LL1-, LL2+, LL2-,DF/M [ DCF/M, TH, SH, Ln, L, CI, C, ] D, LL3+, LL3-, LL4+, LL4- |
PICKETT N16ES  Click for BIGGER PIC
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12" / 10" Dual Base Electronics Vector Log Log Duplex Slide Rule. Eye-saver yellow (ES) coated aluminum construction, black scales, dual log scale design In Pickett's high end 'Chan Street' power rule. This is a very sophisticated 34 scale rule, which includes many unique electronics scales, made in the trademark aluminum body format by Pickett. Operation of the electronics scales is covered by the Chan Street special supplement to the manual. (34 Scales !) Front - SH1, SH2, TH, DF, [ CF, L, S, ST, T, CI, C, ] D, LL3, LL2, LL1, Ln Back - Theta (2), db, D/Q, XL, Zs/Xc [ C/L, F, lambda, w, t, tr'/X'c, Cr, ] Lr, db(2), cos, t'c/c' |
PICKETT ED-26  Click for BIGGER PIC
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9" / 8" Educational Projection Slide Rule. A clear, see-though rule for use with an overhead projector, much simpler to transport and set up than a wall sized deomstrator. Used for classroom instruction, covers basic (non-trig) scales. (7 Scales) Front - K, A, [ B, CI, C, ] D, L |
PICKETT Model 101C  CLICK for bigger PIC!Pickett 101C
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4 Inch Duplex Circular Pickett's most popular aluminum circular slide rule, with decimal to fraction conversions and additional scales on rear face. Very nice rule, shown with the gold embossed black belting leather case. This is a powerful lightweight pocket rule, with performance equal to a much larger straight rule. Rotating dual cursors on one side (with the scale ID's on the cursor), single cursor on the reverse. Note that this rule has no rotating disks, but uses a slip clutch cursor to recreate the slide movement of a straight rule. (15 Scales + conversions) |
PICKETT 104C PROFIT CALCULATOR |
Pickett's commercial pricing circular rule, a huge 8" plastic simplex rule. Instructions on the face. One stationary back side, one rotating front disk, and one rotating clear cursor. Very neat and useful slide rule. (4 Scales) |
PICKETT Model 105C Profit Calculator  CLICK for bigger PIC!
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4 Inch Simplex Circular Pickett's popular plastic commercial circular slide rule, with mark-up and discount functions. Rule has operating instructions on the face, and was a low cost and popular rule widely used in retail. Still made today as a cardboard slide chart by several companies. (4 Scales + directions) |
PICKETT 106C PROPORTIONAL SCALE CALCULATOR |
Pickett's proportional scale circular rule, commonly used in commercial art departments, photography and graphical layout. Still made today as a cardboard slide chart by several companies. (4 Scales) |
PICKETT Model 110ES
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5 Inch Log Log Duplex Circular One of the most sought after Pickett aluminum circular slide rules, in the popular ES (eye saver) yellow color. Complete with black belting leather case with gold logo, and miniature manual that fits inside the case. Has tracked duplex cursor, (with scale markings), and rotating disks on both sides. The unusual two line cursor permits fast circle area calculations between A and D (set the long cursor on D to the diameter, A will show the area on the short cursor). This is a very powerful pocket rule, with performance equal to a much larger straight rule. Has extended trig scales and log log scales. Has doubled CI scale (EI), linear V1 and V2 scales (for right triangles), G scale for stadia calculations, and extended spiral C and D scales (equivalent to 50 inch length). This rule's unique construction has laminated engraved and filled plastic bodies on a metal core for mechanical strength and very long wear life. This rule DOES NOT have painted scales like the 101C, it is engraved like a Versalog. This rule was made in Japan, and marketed by Pickett in yellow, and SINCO (Scientific Instruments Co.) in white. (12/12 [24 Total] Scales, 2 are spiral) |
PICKETT Model 111ES  CLICK for bigger PIC!  CLICK for OTHER SIDE! 
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5 Inch Log Log Duplex Circular One of the most uncommon Pickett aluminum circular slide rules, in the popular ES (eye saver) yellow color. Complete with black belting leather case with gold logo, and miniature manual that fits inside the case. Has tracked duplex cursor, (with scale markings), and rotating disk on one side. The unusual two line cursor permits fast circle area calculations between A and D (set the long cursor on D to the diameter, A will show the area on the short cursor). This is a powerful pocket rule, with performance equal to a much larger straight rule. Has extended trig scales and EIGHT log log scales. Has DI scale and doubled CI scale (EI), with six trig scales. This rule's unique construction has laminated engraved and filled plastic bodies on a metal core for mechanical strength and very long wear life. This rule DOES NOT have painted scales like the 101C, it is engraved like a Versalog. This rule was made in Japan, and marketed by Pickett in yellow, and SINCO (Scientific Instruments Co.) in white. (10/13 [23 Total] Scales) |
PICKETT MICROLINE 120  CLICK for BIGGER PIC 
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12" / 10" Student Simplex Slide Rule Shown complete in factory box with leatherette case, and instruction sheet. Engraved white or yellow plastic construction, black scales. This was a great starter rule, made in a low cost format by Pickett for schools. ES (Yellow) or White (T) rules exist, in several different packaging styles. (9 Scales) Front - K, A, [ B, S, T, CI, C ] D, L |
PICKETT MICROLINE 121T  CLICK for BIGGER PIC CLICK for OTHER SIDE |
12" / 10" Simplex Slide Rule. Shown complete in factory box with leatherette case, and instruction sheet. Embossed white plastic construction, black scales, with conversion factors on reverse side. A very useful student rule, basically a 120 with additional data.Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (9 Scales) |
PICKETT MICROLINE 140  CLICK for BIGGER PIC CLICK for BIGGER PIC OF BACK
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12" / 10" Log Log Trig Duplex Slide Rule Shown complete in factory box with leatherette case, "How to use Log Log Slide Rules" instruction manual. Engraved white plastic construction, black scales. This is a very sophisticated duplex log log rule, made in a low cost plastic format by Pickett for schools.Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (22 Scales) Front - LL2-0.1, LL3-1.0, DF [ CF, CIF, L, CI, C ] D, LL2+0.1, LL3+1.0 Back - LL1-0.01, K, A, [ B, Cos S, Sec T ST, T, C ] D, DI, LL1+0.01 |
PICKETT MICROLINE 160T  CLICK for BIGGER PIC  |
6" / 5" Pocket Simplex Slide Rule. Shown complete in factory box with leatherette case, and instruction sheet. Embossed white plastic construction, black scales. This is a great inexpensive pocket rule, made in a low cost format by Pickett for schools. Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (7 Scales) |
PICKETT N200-ES  N200-ES CLICK for BIGGER PIC CLICK for BIGGER PIC OF BACK
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6"/5" Pocket Slide Rule Pocket Duplex Rule, shown complete in factory box with elegant gold embossed black leather pocket case with nifty extractor tab to easily pull the rule out, and Pickett instruction manual. Many variations of this rule with company logos exist.
(12 Scales) Front - K, A, [ B, CI, C, ] D, L Back - [ S, ST, T, C, ] D |
GREEN PICKETT N200-ES  CLICK for BIGGER PIC CLICK for BIGGER PIC OF BACK
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6"/5" Pocket Slide Rule Pocket Duplex Rule, custom designed for Pritchard (there are both US and Canadian versions). Marked Eye-Saver (ES) yellow, but actually GREEN, aluminum construction underneath. The mos unusual of the 200 model variations.Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (12 Scales) Front - K, A, [ B, CI, C, ] D, L Back - [ S, ST, T, C, ] D |
PURCHASING PICKETT N201-S  CLICK for BIGGER PICCLICK for K-35 Side
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6"/5" Pocket Slide Rule Pocket Duplex Rule, custom designed with the K-35 economic purchase quantity rear face (designed by O.C. Lang, 1955). Marked (S), but actually white, aluminum construction. Fascinating scale operation for the purchase side. (12 Scales) Front - K, A, [ B, CI, C, ] D, L Back - R, [ C, S, ] Q |
Pocket Log Log PICKETT N300-ES  CLICK for BIGGER PICCLICK for Other Side
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6"/5" Pocket Log Log Slide Rule. Pocket Duplex Log Log Rule, very powerful compact pocket rule, see alos the N600 for a pocket log log rule. Eye Saver Yellow (ES), aluminum construction. Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (16 Scales) Front - LL1, A, [ B, T, S, C, ] D, LL2 Back - LL3, DF, [ CF, CIF, CI, C, ] D, L |
PICKETT N400-T
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6"/5" Pocket Business Slide Rule Pocket Business Duplex Rule, shown complete in factory display box with elegant gold embossed maroon leather case with pocket clip, warranty certificate, and Pickett instruction manual.
(14 Scales) Front - K, A, [ B, CI, C, ] D, L Back - R%, DF, [ CF R%, C, ] D, C% |
PICKETT N500ES  CLICK for BIGGER N500ES FRONT PIC CLICK for BIGGER PIC OF N500ES BACK
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12" / 10" Hi Log Log Duplex Slide Rule. Eye-saver yellow (ES) coated aluminum construction, black and red scales. This is a sophisticated rule, made in the trademark aluminum body format by Pickett. Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (22 Scales) Front - LL2+0.1, LL2-0.1, DF [ CF, CIF, L, CI, C ] D, LL3+1.0, LL3-1.0 Back - LL1+0.01, LL1-0.01, A, [ B, T, ST, S, C ] D, DI, K |
PICKETT N500T  CLICK for BIGGER N500T FRONT PIC  CLICK for BIGGER PIC OF N500T BACK
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12" / 10" Hi Log Log Duplex Slide Rule. Traditional (T) white coated aluminum construction, black and red scales. This is a sophisticated rule, made in the trademark aluminum body format by Pickett. (22 Scales) Front - LL2+0.1, LL2-0.1, DF [ CF, CIF, L, CI, C ] D, LL3+1.0, LL3-1.0 Back - LL1+0.01, LL1-0.01, A, [ B, T, ST, S, C ] D, DI, K |
BOXED PICKETT N500ES  CLICK for BIGGER N500ES FRONT PIC CLICK for BIGGER PIC OF N500ES BACK
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12" / 10" Hi Log Log Duplex Slide Rule Shown in the Pickett factory box. Eye-saver yellow (ES) coated aluminum construction, black and red scales. This is a sophisticated rule, made in the trademark aluminum body format by Pickett. Shown complete in the factory box with manual, leather case and guarantee certificate. Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (22 Scales) Front - LL2+0.1, LL2-0.1, DF [ CF, CIF, L, CI, C ] D, LL3+1.0, LL3-1.0 Back - LL1+0.01, LL1-0.01, A, [ B, T, ST, S, C ] D, DI, K |
PICKETT BOXED N500T  CLICK for BIGGER N500T FRONT PIC  CLICK for BIGGER PIC OF N500T BACK
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12" / 10" Hi Log Log Duplex Slide Rule. Shown as a full boxed set with black leather case. Traditional (T) white coated aluminum construction, black and red scales. This is a sophisticated rule, made in the trademark aluminum body format by Pickett. Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (22 Scales) Front - LL2+0.1, LL2-0.1, DF [ CF, CIF, L, CI, C ] D, LL3+1.0, LL3-1.0 Back - LL1+0.01, LL1-0.01, A, [ B, T, ST, S, C ] D, DI, K |
PICKETT N515T Electronics Rule  CLICK for BIGGER N515T FRONT PIC  CLICK for BIGGER PIC OF N515 scales!
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12" / 10" Electronic Duplex Slide Rule. Shown as a boxed set with maroon leather case, gold embossed with Cleveland Institute of Electronics and Pickett logo. Traditional (T) white coated aluminum construction, black and red scales, optimized for electronics problems. This is an extremely useful rule, made in the trademark aluminum body format by Pickett. It was part of the CIE electronics course. Fortunately, all the special scales are SELF-DOCUMENTING on the right hand side! Need the special scale operating instructions? JUST CLICK HERE to download the zipped file with all the scanned pages. (GIFs, use any good image viewer like ACDSee to display/print each page) (15 Scales) Front - H, 2pi, A, [ B, S, T, CI, C ] D, L, Ln Back - Reactance/Resonance Decimal Point locator scales formulas and factors |
Aerial Photography PICKETT 520-T  CLICK for BIGGER PICCLICK for Other Side
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12"/10" USAF (A-1) Aerial Photography Slide Rule Full sized Duplex Rule, with aerial photography scales on reverse, intended primarliy for the USAF and US Army. White, aluminum construction. Has full A-1 instructions on rear face, and a powerful folded scale set on the front. (16 Scales) Front - L, A, DF, [ CF, CIF, T, S, C, ] D, DI, K Back - Ground Size, [ Image size cm, ft, FL, ] Altitude |
PICKETT CREI N531ES  CLICK for BIGGER PIC CLICK for OTHER SIDE PIC |
12" / 10" Log Log Trig Electronic Duplex Slide Rule. Shown complete with leatherette case. Special Capitol Radio Engineering Institute Rule. Yellow coated Aluminum construction, black scales. Another special purpose rule (see also the 515) for CREI. Has a special 2pi scale added for electronics use, plus additional markings. (17 Scales) Front - LL2, LL1, DF [ S, ST, T, C ] D, LL3 Back - L, Ln, A, [ B, CI, C ] D, 2pi, K |
Pratt and Whitney N540T  CLICK for bigger PIC!  CLICK for BIGGER PIC  CLICK for BIGGER PIC |
 SPECIAL PURPOSE Pickett Rule 12"/10" Pratt and Whitney CS126-1 Turbine Rule (9 Scales) Front Inlet air temp F [ PT, C, ] D Back Std., [ Inlet Air Temp F, Indicated Temp C, Indicated Temp F, Corrected temp. F, Corrected Temp. C] D |
Pocket Log Log PICKETT N600-ES  CLICK for BIGGER PICCLICK for Other Side
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6"/5" Pocket Log Log Speed Slide Rule Pocket Duplex Log Log Speed Rule, very powerful compact rule with an amazing 22 scales! Eye Saver Yellow (ES), black and red scales, aluminum construction. Requires sharp vision. (22 Scales!) Front - LL1+, LL1-, A, [ B, ST, T, S, C, ] D, DI, K Back - LL2+, LL2-, DF, [ CF, Ln, L, CI, C, ] D, LL3+, LL3- |
Pocket Log Log PICKETT N600-T  CLICK for BIGGER PICCLICK for Other Side
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6"/5" Pocket Log Log Speed Slide Rule. Pocket Duplex Log Log Speed Rule, very powerful compact rule with an amazing 22 scales! Traditional White (T), black and red scales, aluminum construction. Good vision required.Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (22 Scales!) Front - LL1+, LL1-, A, [ B, ST, T, S, C, ] D, DI, K Back - LL2+, LL2-, DF, [ CF, Ln, L, CI, C, ] D, LL3+, LL3- |
Pocket Log Log PICKETT N600-ES  CLICK for BIGGER PIC
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6"/5" Pocket Log Log Speed Slide Rule. Very powerful compact rule with an amazing 22 scales! Eye Saver Yellow (ES), black and red scales, aluminum construction, shown in the display box. Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE. (22 Scales!) Front - LL1+, LL1-, A, [ B, ST, T, S, C, ] D, DI, K Back - LL2+, LL2-, DF, [ CF, Ln, L, CI, C, ] D, LL3+, LL3- |
Pickett N606ES Metric Converter  Click for bigger PIC Click for bigger PIC of the OTHER SIDE |
6"/5" Pickett Metric Conversion Pocket Slide Rule. Metric Converter and Simplex Trig format rule, shown complete in factory box with case, and manual. An incredibly useful rule, this has extensive metric conversion (including temperature) on one side, and a full function trig rule on the other. Even does fraction to decimal conversion. A wonderful little treasure. Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE.(15 Scales and Conversion Slide) Front - K, A, [ B, T, S, CI, C, ] D, L Back - Degrees F, Fractions, A, [ Conversions] A, Degrees C, Decimals |
Pocket Aerial Photography PICKETT N700T  CLICK for BIGGER PIC  CLICK for BIGGER PIC  CLICK for Other Side
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6"/5" USAF (A-2) Pocket Aerial Photography Slide Rule. Shown in factory box, complete with unusual data window clip case, and rare full manual (covers both A-1 and A-2 formats). Pocket Duplex Rule, with full aerial photographic and conventional scales, very seldom seen in a pocket rule format. Intended primarliy for the USAF and US Army. White, aluminum construction. Has full A-2 instructions on rear face, and a powerful folded scale set on the front. Very unique Pickett clip case, has a rear data chart inside a plastic window, extremely useful! (16 Scales) Front - L, A, DF, [ CF, CIF, T, S, C, ] D, DI, K Back - Ground Size, [ Image size cm, in, FL, ] Altitude |
PICKETT 800-ES  CLICK for BIGGER 800-ES FRONT PIC CLICK for BIGGER PIC OF 800-ES BACK
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JUST IN 12" / 10" Log Log Exponential Duplex Slide Rule |
PICKETT N800T  CLICK for BIGGER N800T FRONT PIC  CLICK for BIGGER PIC OF N800T BACK
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12" / 10" Log Log Exponential Duplex Slide Rule. Shown complete in factory box with black leather case, "How to use Log Log Slide Rules" instruction manual and warranty certificate. White (T) coated aluminum construction, black and red scales. This is a sophisticated rule made in the trademark aluminum body format by Pickett, it replaced the virtually identical N500 rule. Black leather cases with gold embossed Pickett logo. (22 Scales) Front - LL2+0.1, LL2-0.1, DF [ CF, CIF, L, CI, C ] D, LL3+1.0, LL3-1.0 Back - LL1+0.01, LL1-0.01, A, [ B, ST, T, S, C ] D, DI, K |
PICKETT N803ES  CLICK for BIGGER N803ES FRONT PIC |
12" / 10" Dual Base Log Log Duplex Slide Rule. Shown complete in factory box with leather case, "How to use Log Log Slide Rules" instruction manual. Eye-saver yellow (ES) coated aluminum construction, black and red scales, dual log scale design with repeated C/D scales for ease of use, referred to as 'synchro-log' scales. This is a very sophisticated rule, made in the trademark aluminum body format by Pickett, complete with a gold embossed black leather case. (28 Scales) Front - LL0-0.001, LL0+0.001, LL1+0.01, LL1-0.01, DF [ CF, CIF, L, CI, C ] D, LL2+0.1, LL2-0.1, LL3+1.0, LL3-1.0 Back - Sq Rt1, Sq Rt2, K, A, [ B, ST, T, CI, S, C ] D, DI, DFm |
PICKETT 803-T  CLICK for BIGGER 803-T FRONT PIC CLICK for BIGGER 803-T BACK PIC
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12" / 10" Dual Base Log Log Duplex Slide Rule. White (T) coated aluminum construction, black scales, dual log scale design with repeated C/D scales for ease of use. This is a very sophisticated rule, made in the trademark aluminum body format by Pickett. This early version has a slight scale change to the final N type, the position of the S scale is moved. (28 Scales) Front - LL0-0.001, LL0+0.001, LL1+0.01, LL1-0.01, DF [ CF, CIF, L, CI, C ] D, LL2+0.1, LL2-0.1, LL3+1.0, LL3-1.0 Back - Sq Rt1, Sq Rt2, K, A, [ B, S, ST, T, CI, C ] D, DI, DFm |
PICKETT N803ES/N600ES Set  CLICK for BIGGER BOX PIC
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12" / 10" and 6" / 5" Dual Base Log Log Duplex Slide Rule Set. Shown complete in slightly worn factory box with 2 gold emossed black leather cases, "How to use Log Log Slide Rules" instruction manual, Belt Loop accessory, and Warranty. Eye-saver yellow (ES) coated aluminum construction, black and red scales, dual log scale design with repeated C/D scales for ease of use. This is a another Pickett 'twin-pack', made in the trademark aluminum body format by Pickett, complete with a gold embossed black leather cases. (N803-28 Scales) Front - LL0-0.001, LL0+0.001, LL1+0.01, LL1-0.01, DF [ CF, CIF, L, CI, C ] D, LL2+0.1, LL2-0.1, LL3+1.0, LL3-1.0 Back - Sq Rt1, Sq Rt2, K, A, [ B, ST, T, CI, S, C ] D, DI, DFm |
Marine Fuel Rule PICKETT N808-T  CLICK for BIGGER PICCLICK for Other Side
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8"/6" Chevron Marine Fuel Slide Rule. Very unusual 8 inch mid-sized Duplex Rule, with special fuel scales on front and reverse. White (T), aluminum construction. Special Standard Oil scale design, copyright 1961. I have seen no other Pickett rule in this odd 8 inch size format, and the scales are quite unique. Color logo on reverse. (15 Scales) Front - API gravity, Specific gravity, barrels/long ton, [ CI, C, ] D, K, L Back - Engler, SSu, SSf, [ std. bunker fuel, ] degrees F, degrees C |
Pickett N902K-ES  CLICK for a BIGGER PIC!  Click for a BIGGER PIC! |
Complete Training Kit! 12"/10" Full Size Simplex Trig Slide Rule Shown in the view-box, with case, and training manual, plus directions on the reverse of the rule! Eyesaver Yellow, aluminum construction, very high quality, American Made, Pickett rule.The perfect kit to train that new user! (9 Scales) |
Pickett N902K-T  CLICK for a BIGGER PIC! Click for a BIGGER PIC! |
Complete Training Kit! 12"/10" Full Size Simplex Trig Slide Rule. Shown in the view-box, with case, and training manual, plus directions on the reverse of the rule! Traditional White, aluminum construction, very high quality, American Made, Pickett rule. The perfect kit to train that new user! (9 Scales) |
PICKETT 904T  CLICK for BIGGER PIC CLICK for OTHER SIDE
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DECIMAL KEEPER RULE! 12" / 10" Trig Exponential Slide Rule. This rule has normal scales, and on the reverse, the scales repeated for decimal location with an incredible 40 orders of magnitude! Great for problems with wide dynamic range, and fascinating to use and see. |
Pickett N909ES Metric Converter  Click for bigger PIC |
12"/10" Pickett Metric Conversion Slide Rule. Metric Converter and Simplex Trig format rule, shown complete in factory box with case, and manual. An incredibly useful rule, this has extensive metric conversion (including temperature) on one side, and a full function trig rule on the other. Even does fraction to decimal conversion. A wonderful treasure, the big version of the N606ES. Note that the full Pickett teacher's manual that covers this rule and others is now on line HERE.(15 Scales and Conversion Slide) Front - K, A, [ B, T, S, CI, C, ] D, L Back - Degrees F, Fractions, A, [ Conversions] A, Degrees C, Decimals |
Pickett N1010K-T  CLICK for a BIGGER PIC! Click for a BIGGER PIC! |
Complete Training Kit! 12"/10" Full Size Duplex Trig Slide Rule. Shown in the view-box, with case, and training manual, with advanced trig scale set! Traditional White, aluminum construction, very high quality, American Made, Pickett rule. Has a gold embossed LEATHER slip case! (17 Scales) |
PICKETT 1010-MF  CLICK for BIGGER PIC CLICK for OTHER SIDE
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PROMOTIONAL METAL FINISH RULE! 12" / 10" Trig Slide Rule This duplex rule has a good complement of normal, inverse, folded and trig scales, and a very attractive, if somewhat low contrast appearance. |
PICKETT N1010SL-ES Super Power Trig  CLICK for BIGGER PIC CLICK for OTHER SIDE
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12" / 10" Trig Slide Rule. SUPER POWER TRIG Rule, eyesaver yellow over aluminum, with black and red scales. This duplex rule has a good complement of normal, inverse, folded and trig scales, very attractive appearance. Has 3 extra scales over the base model, including the double square scales.(20 Scales !!) Front - Sq1, Sq2, A, [ B, ST, T, S, C ] D, DI, K Back - L, DF, [ CF, CIF, CI, C ] D, DI, Ln |
CLICK for back side!
Key Data From Pickett Manuals (Collected and reproduced by Craig Kielhofer) The following table shows how Pickett characterized their rules by industry sector and complexity. While many models are not shown in the table, it does give some idea of how Pickett developed and marketed different slide rule designs.
note that the first model in each type
& size was the most popular model of Pickett slide rule
REDUCES EYE FATIGUE- Reds put the image behind, blues put the image in front of the retina. Eye-Saver "5600" puts the image on the retina and absorbs the actinic rays which produce "tired eyes."
AIDS ACCURACY- The contrast of graduations, and legends with Eye-Saver "5600" is sharp and distinct. Positioning of the slider and cursor is more exact and the reduction of fatigue combine to avoid error and improve precision setting and reading.
NO GLARE- under any light - bright sun, fluorescent or incandescent- Eye-Saver "5600" reflects long wave length rays. White reflects all colors, including the short wave length actinic rays, which create "hot" spots.
EYE-SAVER Yellow green (Angstrom 5600) is a Pickett exclusive that helps to prevent eye-strain headaches, improve slide rule computation speed and accuracy, reduce error and lower costs. It is available on all models of Pickett All-Metal slide rules.
Your Pickett Slide Rule is a precision instrument, embodying the finest construction, scale and operating features. You will prize this fine instrument and find it more and more valuable as your skill and understanding of its use increases. With proper care and use you may expect years of accurate service and satisfaction.
Thank you for this opportunity to be of service. May we wish you every success in your chosen filed of endeavor.
John W. Pickett
Detailed here are many Pickett exclusives and innovations that have earned educator approval, professional acceptance and the praise of scientists, engineers, and students.
80-inch Log Log scales are all on one side to save turning this rule over.
Dual Base (tm) feature provides reading of logarithms to Base e and Base 10 from the same setting.
Pickett exclusive Ln scale puts powers of e, directly into combined operations.
30-inch Cube Root scales are accurate to 3 places.
20-inch Square Root scale are accurate to 3 places.
20-inch Tangent scale, Sine, Sine-Tangent, Hyperbolic Tangent,
C-D and C-CI scales on both sides save turning rule over.
Folded scales DF/M - CF/M and DF - CF
the above was shown with a Pickett N4-ES slide rule.
FIELDS OF WORK/STUDY
SIZE of RULE
Length/Scale
ADVANCED
LOG LOG
STANDARD
LOG LOG
SIMPLEX & TRIG
BASIC FIELDS OF ENGINEERING
CHEMICAL & related fields
12"/10"
4, 3
803, 500 1010, 902
6"/5"
600
1006
CIVIL and related fields
12"/10"
4, 3
803, 500 1010, 902
6"/5"
600
1006
ELECTRICAL, ELECTRONICS and related fields
12"/10"
4, 3, 16
803 1010, 902
6"/5"
600
1006
INDUSTRIAL
12"/10"
803, 800
1010, 902
6"/5"
600
1006
MECHANICAL & related fields
12"/10"
4, 3, 16
803, 800 1010, 902
6"/5"
600
1006
PHYSICS AND OTHER FIELDS OF SCIENCE
BIOLOGY and related fields
12"/10"
803, 500
1010, 902, 125
6"/5"
600
1006
CHEMISTRY and related fields
12"/10"
4,3 803, 500
1010, 902
6"/5"
600
1006
PHYSICS and related fields
12"/10"
4, 16, 3
803 1010, 902
6"/5"
600
1006
MATHEMATICS
12"/10"
4, 3 803, 500
1010, 902
6"/5"
600
1006
SECONDARY SCHOOLS AND MATHEMATICS
12"/10"
4, 3 803, 500
1010, 902, 120
6"/5"
600
1006
VOCATIONAL & TECHNICAL SCHOOLS
12"/10"
4,16,3
803, 500 1010, 902
6"/5"
600
1006
ECONOMICS & BUSINESS MANAGEMENT
ACCOUNTING
12"/10"
800, 500
1010, 902, 125
6"/5"
600
1006, 400
INSURANCE & FINANCE
12"/10"
800, 500
1010, 902
6"/5"
600
1006, 400
PRODUCTION & QUALITY CONTROL
12"/10"
3 803, 500
1010, 902
6"/5"
600
1006
STATISTICS
12"/10"
4, 3 525, 500
1010, 902, 125
6"/5"
600
1006
SALES Technical
12"/10"
4, 3 803, 500
1010, 902
6"/5"
600
1006
SALES Non-Technical
12"/10"
1010, 902, 125
6"/5"
600
1006, 400
ELEMENTARY SCHOOLS
12"/10"
902, 120, 125
HOW PICKETT EYE-SAVER SLIDE RULES
SAVE EYESTRAIN -- AID ACCURACY
Chromatic aberration tests establish that Angstrom "5600" is the point on the spectrum for optimum eye-ease. Pickett Eye-Saver yellow green exactly duplicates this color value.
Pickett Slide Rules are the World's Finest.
It is with pleasure that we welcome you as a new owner of a Pickett All-Metal Slide Rule.
Range 10E-10 to .9977 and 1.0023 to 10E10.
Range from 0 to infinity with 3 or 4 place accuracy.
and Hyperbolic Sine scales are on slider for speed and accuracy.
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