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(NIB) New in the Box Slide Rules Faber-Castell, Nestler, POST, Hemmi, Aristo, Blundell + Others ![]() Click REFRESH on your browser if pages seem unchanged | ![]() Please Note: All Prices are in US$ |
Sphere Research Corporation 3394 Sunnyside Rd. West Kelowna, BC, Canada V1Z 2V4 Phone: +1 (250) 769-1834 A great source for test equipment, repairs, calibrations, useful metrology information, and of course, SLIDE RULES! ![]() ![]() ![]() Just ![]() |
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![]() ![]() ![]() NIB (NEW IN the BOX) and MINT SLIDE RULES ![]() ![]() ![]()
You can order anything here just by picking up the phone, and calling (250) 769-1834 during normal office hours, 8:30AM to 4:30PM PST. OR, Email your order to Susan ![]() ![]() ![]() ![]() ![]() ![]() The CATALOG will appear below shortly! |
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![]() Faber-Castell Bivius 1/28 ![]() CLICK for BIGGER PIC ![]() CLICK for BIGGER PIC ![]() ![]() |
12"/10" precision Slide Rule BRAND NEW, mint condition! complete with plastic clear/green display case and 1/22 factory manual REPRINT in English! Commerce/Business rules are not very common in North America, but were widely used in Europe. It is set up to do Mark-up/Discount, simple and compound interest, currency and common unit conversions and all the normal math functions, plus log log scales on the slide reverse. Versatile wood body rule with 6 line 3-sided cursor, accessory ruler/data strip, and a 27cm ruler along the top edge. The body back has constants and formulas is German. The rule is self documenting on right hand side for all scales. A very good quality rule with black red and green scale markings. Includes scale marks for dozen (12) and gross (144). Mint condition sets, and this business style rule doesn't show up very often, especially with the unique currency scales and marks. (13 Scales + Marks, 1 Ruler) (RH) Top Edge - cm/ L Front - K, DF, [ CF, CI, C, ] D, A Bottom Edge - sh/d, Pounds Back - [ LL1, LL2, C ] Data & Formulas |
![]() 9 Sets Includes: Display Case Ruler English Manual Reprint $129
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![]() Faber-Castell 1/54 Darmstadt ![]() Click here for Bigger PIC! ![]() Rule Back Face ![]() Click here for Side Pic ![]() |
FC Classic Sets, MORE Just Arrived! 12"/10" Full Size System Darmstadt Mannheim Slide Rule. Faber's advanced Mannheim rule, widely used in Europe, and a real classic. Includes a reprint of the hard to find factory English manual and clear/green compact display case! This rule has a visible wood core, with white celluloid faces, black and red filled and engraved scales, plus 2 side cursors and scale sets. This is a very unusual design, with a complex 3-sided, 7 line cursor, and is the final (late) version of this rule. Has the Rietz over-range scale extensions, plus the Pythagorean scale (P), side log scale on top, and side sine and tangent scales at the bottom. Slide reverse has 3 log log scales (ex). Scales are self documenting on the right side. Celluloid 3 line cursor. This rule has has a blank back, with 2 rear cursor windows for the 3 log log scales on the slide reverse, and bevelled side cm ruler. Enjoyable to use, and lovely to look at, every surface has been used to do something useful. Older models had formulas and factors on the back, this late rule has a complete accessory ruler included (cm and inch) with the factor data on it. Pic is one of the actual rules offered. This is a real classic rule treasure, don't miss your chance to get a new MINT set, no more new stock once these are gone. (13 Scales and cm ruler) (RH) Front - K, A, [ B, CI, C, ] D, P Back - 3 (ex) scales. Top Side - cm ruler, L Bottom Side - S, T |
12 Sets Includes: Display Case Ruler Manual Reprint ![]() Display Cased Set ![]() Save $10! Now $159
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![]() Faber-Castell 1/98 Elektro ![]() Click for bigger PIC! ![]() Click for bigger PIC! ![]() Click for bigger PIC! ![]() Click for bigger PIC! ![]() |
Classic FC rules, with unusual edge and in-body scales! NEW 1/98 Elektro display cased rule sets. These sets includes the rule, clear/green case, plus a reprint of the English factory manual (which also covers several related types). These sets are new and unused, and are in MINT condition (the rules are still sealed inside factory plastic bags), great examples of FC's Simplex/Mannheim rule designs. Includes the special motor/dynamo scales. 1/98 10" Elektro Rule A beautiful Electrical rule with a large 5-line front and edge cursor, two color (red/black) scale markings, and over-range scale extensions, with all scales self documenting on the right hand side. Has LL2/LL3 log log scales on the front, special electrical gauge marks, edge metric ruler (cm) a rare bottom edge K (cube) scale, and 3 slide reverse Trig scales, PLUS dynamo/volt scales inside the rule body itself. This has all the special construction features classic FC wood body rules were famous for. A very powerful and well made simplex rule with many unusual features! (RH) (13 scales, 6 cursor lines, 1 ruler) (RH) Front - cm / LL2, A, [ B, CI, C, ] D, LL3 Edge - K Inside - Dynamo, Volt Back - [ S, L, T ] |
Includes: English Manual Reprint Rule Plastic Display Case ![]() Display Cased Set ![]() Save $10! Now $149 FC 1/98 Display Cased Set Like this set? ![]() ![]() CLICK TO ORDER | ||||||
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![]() Faber-Castell 2/83N Novo-Duplex Rule With embossed green fiberboard display case as shown ![]() Click for bigger PIC! ![]() Click for bigger PIC! ![]() |
BRAND NEW, MINT condition 2/83N Novo-Duplex factory cased rule sets with factory German manuals and accessory rulers. These sets include the rule, green fiberboard case, accessory ruler and German (factory) and English (reprint) language manuals. These sets look virtually untouched (much better than the pics can easily show), and have been in storage since they were orignally made in Germany. You will be very pleased with these, they are mint condition by any standard. I really like this rule, and these sets are exceptional, a wonderful gift for that rule fanatic you know, or for your kids as a real keepsake treasure. The case has a front FC logo, and stores the manual, and accessory ruler inside. This rule is variously marked Novo-Biplex (mainly for sale outside Germany), and Novo-Duplex, these sets all say Novo-Duplex. Everything has been inspected, cleaned and polished, for the best possible appearance. We paid a very high price to get these sets, so they are expensive, but you will not find them in better condition anywhere.
Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges. These late sets were put together with the very last remaining parts at Faber-Castell, and stored in their warehouse. (30 scales, 11 cursor lines) Front - T1, T2, K, A, DF, [ CF, B, CIF, CI, C, ] D, DI, S, ST, P Back - LL03, LL02, LL01, LL00, W2 [ W2', CI, L, C, W1', ] W1, LL0, LL1, LL2, LL3 |
Just 1 Includes: ![]() FC 2/83N Green Cased Sets Like these sets? Email for Quote! ![]() ![]() CLICK TO Quote | ||||||
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![]() Faber-Castell Disponent 111/22 ![]() CLICK for BIGGER PIC ![]() ![]() |
12"/10" precision Slide Rule BRAND NEW, mint condition! complete with plastic clear/green display case and factory manual in English! Commerce/Business rules are not very common in North America, but were widely used in Europe. It is set up to do Mark-up/Discount, simple and compound interest, currency and common unit conversions and all the normal math functions, plus log log scales on the slide reverse. Versatile plastic body rule with 2 line cursor, accessory ruler/data strip, and a 27cm ruler along the top edge. The body back is blank. The rule is self documenting on right hand side for all scales. A very good quality rule with black red and green scale markings. Mint condition sets, and this business style rule doesn't show up very often, especially with the unique currency scales and marks. RH (11 Scales + Marks, 1 Ruler) (RH) Front - cm/ Units, Mark-up/Discount, DF, [ CF, CI, C, ] D, L Sh/D, Pounds Back - [ LL1, LL2, C ] We also have 1 new display boxed 1/22 wood body version of this rule, complete with original manual, same price. |
![]() Last 3 Sets Includes: Display Case Ruler English Manual $129
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![]() ![]() 27403-III System Darmstadt ![]() Click for bigger PIC! ![]() Click for bigger PIC! ![]() |
Uncommon Full Sized Logarex Rules Just Arrived from Europe!
![]() (14 Scales, 4 cursor lines, 2 Rulers) (RH) FRONT- cm/ log, sq rt(1-X2), X3, X2, [ X2, 1/X, X, ] X, sin, tg, s-t BACK- inch/ [ e0.01X, e0.1X, eX ] Factors on the body area |
![]() Save $10! Now $119
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![]() ![]() 27602-II Exponent Duplex ![]() Click for bigger PIC! ![]() |
Uncommon POWERHOUSE Over-Sized Logarex DUPLEX Rules Just Arrived from Europe!
![]() VERY LATE MODEL, made in Czechoslovakia. Powerful, brand new over-sized rule with unusually long scales and body, 6 log log scales on the body, folded (pi) scales, pythagorean and extended trig scales, and 4 line cursor. Unusually marked, this rule contains ONLY scale equivalents, no arbitrary letters. Has a soft brown padded leatherette case with top flap, and the name of the UK distributor for Logarex (Hellerman) embossed on one side. A very powerful and well-designed high end rule, but uncommon in North America. Engraved and filled red/black scales. A very high end Log Log rule with Pythagorean and extended trig scales. The 4 page Hellerman basic instructions are included. (23 Scales, 4 cursor lines)(RH) FRONT- log, sq rt(1-X2), X3, X2, [ X2, 1/X, X, ] X, sin, tg, s-t BACK- e0.01X, e0.1X, eX piX [ piX 1/piX, 1/X, X ] X, e-X, e-0.1X, e-0.01X |
$169
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![]() ![]() 27607-I Studio Duplex ![]() Click for bigger PIC! ![]() Click for bigger PIC! ![]() |
Uncommon POWERHOUSE Over-Sized Logarex DUPLEX Rules Just Arrived from Europe!
![]() VERY LATE MODEL, made in Czechoslovakia. Powerful, brand new over-sized rule with unusually long scales and body, 6 log log scales on the body, folded (pi) scales, pythagorean and extended trig scales, and 4 line cursor. This rule contains BOTH scale equivalents, and arbitrary scale letters, very similar to the 27602-II with slightly different functions. Has a 2-part soft plastic holster style case and Logarex embossed on one side. A very powerful and well-designed high end rule, but uncommon in North America. Engraved and filled black scales with some scale marks in red, plus two lime green accent stripes on the C and CF scales. A very high end Log Log rule with Pythagorean and extended trig scales. The 4 page Hellerman basic instructions are included. The end braces have raised bosses to make sure the cursor is not scratched if the rule is laid flat on a desk, like the FC 2/83N. The nicest Logarex rule I have seen so far. (23 Scales, 4 cursor lines) (RH) FRONT- ST, T1, T2, DF [ CF, CIF, CI, C ] D, P, S BACK- LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1 |
$179
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![]() ![]() Staedtler-Mars 544A ![]() Click for bigger PIC! |
12"/10" 544 A Simplex Slide Rule BACK IN STOCK! BRAND NEW, NIB, A visually beautiful rule, complete with 2 part plastic case and factory box. The 544A features the trademark S/M blue slide and body braces, multi-line (5 line) cursor, plus two color (red/black) scale markings, and folded scales. The rule is self documenting on the right hand side for all scales. Staedtler-Mars rules are highly requested but quite uncommon in North America, and are very well made designs. Attractive blue slide and body braces, complement the bright blue and white two part plastic case. The folded scales are especially useful for mark-up/discount calculations, and a center index is well marked for this. The 'invisible brace' style with braces on the back gives the rule a very clean European look from the front. Blank on the reverse side. We have included reprints of the S/M consolidated rule instructions because these came factory packed with no instructions. These were still sealed in a factory bulk pack, so everything is in mint condition. (8 Scales, 5 Cursor Lines) (RH) Front - K, DF, [ CF, CIF, CI, C, ] D, A Back - Blank |
![]() Save $20! ![]() Now $75 Mars 544A | ||||||
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Darmstadt Nr. 0210 ![]() CLICK for BIGGER PIC ![]() ![]() CLICK for BIGGER PIC ![]() CLICK for OTHER SIDE
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![]() A Wonderful Classic Wood Body Design from Nestler! Finally Back in Stock! 12"/10" Darmstadt Slide Rule BRAND NEW, complete set with Nestler black and red box, 2-part blue case with gold nestler logo, and factory original English manual. Amazing mahogany body rule with 4 line cursor AND 2 edge scale sets. The engraved, laminated faces have two color (red/blue) scale markings, over-range scale extensions, P Pythagorean scale, Log Log scales on slide reverse, edge cm ruler. The rule has a top Lg edge scale (on sloped edge with the cm ruler), and the bottom edge has trig scales, S and T. Very unusual body/cursor design, see the detailed pics! An exceptionally high quality rule, in excellent condition, looks much better than the scans, as it's hard to show the wide contrast. Back has conversion factor tables. (13 Scales and 1 Ruler) Top Edge - cm ruler, Lg Front - K, A, [ B, CI, C, ] D, P Back - [ LL1, LL2, LL3 ] Bottom Edge - S, T |
![]() $169 Nr. 0210 | ||||||
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Elemath RS Duplex ![]() CLICK for BIGGER PIC ![]() CLICK for OTHER SIDE ![]() |
Last 4 Sets!![]() 10" Elemath RS Duplex Slide Rule Nestler's late production style duplex rule. BRAND NEW rule, with 2 part plastic case. Has normal and folded basic scales (at 3), expanded trig scales, and a 6 line cursor. Has green body supports, and a pale green stripe on the entire slide (both sides), and black and red filled/ engraved scales. An excellent full sized Trig rule, great for high school students. All scales are self documenting on the right hand side. German manual sheets included. We will include a reprint of the full 16 page Nestler Darmstadt/Rietz Manual (English). (17 Scales) Front - K, A, [ B, CI, C, ] D, L Reverse - T1, T2, DF, [ CF, CIF, CI, C, ] D, S, ST |
Includes: Plastic Case Rule Manual Reprint ![]() $115
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Nr. 0292 Multimath Duplex ![]() CLICK for BIGGER PIC ![]() |
Just 1 Set!
![]() 14/11" Multimath Duplex Slide Rule Nestler's powerhouse late production over-sized duplex rule. BRAND NEW rule, with 2 part plastic case, manual, accessory ruler and factory box. Has normal and folded basic scales (at 2.7), expanded trig scales, split square root scales, Pythagorean scale, 8 log log scales, and a 4/2 line cursor. Has body supports with skid bumpers (to allow flat operation without damaging the cursor), and a pale green stripe on the entire slide (both sides), and black filled/ engraved scales with red digits on some scales. An excellent full sized Log Log rule, the top of the line from Nestler. All scales are self documenting on the right hand side. (28 Scales, 4/2 Cursor Lines) (RH) Front - LL00, LL01, LL02, LL03, DF [ DF, CIF, CI, C ] D, LL3, LL2, LL1, LL0 Reverse - P, S, T1, T2, A [ B, K, CI, C ] D, R1, R2, L, ST |
Includes: Box Ruler Plastic Case Rule Factory Manual ![]() $195
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![]() ![]() Teledyne/POST 44CA-500 / 1450 Versatrig Rule ![]() ![]() Click for bigger PIC! ![]() Click for bigger PIC! ![]() Click for bigger PIC! ![]() ![]() |
![]() POST Contents, CLICK for bigger PIC! Transitional set, new box says Teledyne Post, but contents are still original Post. ![]() ![]() CLICK HERE to visit the POST Archive 10" NIB Versatrig Slide Rule Set Beautiful full sized duplex trig bamboo rule with framed glass cursor and embossed black fiber case (has built-in belt hanger) in factory box with english manual. The rule is still sealed in the factory plastic bag. Excellent condition set, with a bit of box wear! Please note, the box is VERY fragile and thin. Has folded CF and CIF scales, split square root (R) scales, plus DI and 3 dual trig scales. A very attractive and hard to find rule, this set is made a bit more interesting by virtue of the fact it was a TRANSITIONAL set, boxed as Teledyne, but with all the contents marked as POST. As with all bamboo body rules from Post or Teledyne Post, they are actually made by Hemmi in Japan. (17 Scales) Front inch - K, DF, [ CF, CIF, CI, C, ] D, R1, R2 Reverse - L, A, [ T, SecT/ST, Cos/S, C, ] D, DI |
1 New rule (unboxed) still in stock Includes: Box Manual Case $195 Ea.
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![]() Faber-Castell 2/83 Novo-Biplex Rule With clear/green display case as shown ![]() Click for bigger PIC! ![]() |
NEW, excellent condition 2/83 Novo-Biplex set with factory Spanish manual and accessory ruler. This set include the rule, green/clear display case, accessory ruler and Spanish (factory) and English (reprint) language manuals. This set is in exceptionally good condition for its age. This is the mid-design of this rule from FC, with the added color stripes, and has the fully adjustable body design and 6/4 line cursor with adjustable tension. The case has a front FC logo, and stores the manual and accessory ruler inside. This rule is variously marked Novo-Biplex (mainly for sale outside Germany), and Novo-Duplex, this set says Novo-Biplex. Everything has been inspected, cleaned and polished, for the best possible appearance.
Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges. . (24 scales, 10 cursor lines) Front - K, T1, T2, DF, [ CF, CIF, CI, C, ] D, S, ST, P Back - LL03, LL02, LL01, W2 [ W2', L, C, W1', ] W1, LL1, LL2, LL3 |
SORRY, SOLD Includes: ![]() FC 2/83 Display Cased Set Like these sets? $195 ![]() ![]() CLICK TO ORDER | ||||||
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![]() Faber-Castell 111/54A Darmstadt W/Addiator ![]() Click here for Bigger PIC! ![]() CLICK for bigger PIC! ![]() Side L (log) Scale ![]() |
FC Addiator Sets, Just 2!![]() CLICK for bigger PIC! 12"/10" Full Size System Darmstadt Mannheim Slide Rule in the later plastic body style, complete with a 6 digit Addiator on the reverse side. Faber's advanced Mannheim rule, widely used in Europe, and a real classic. Includes factory English manuals for the rule and addiator, stylus for the addiator, and a zippered green, logo-embossed travel case! This rule has black and red filled and engraved scales, plus 2 reverse cursors, a top cm ruler, and a bottom L scale with side cursor line. This is a very unusual design, with a complex 2-sided, 6 line cursor, back-side Addiator (adding/subtracting machine), and is one of the hardest versions of this rule to find. Has the Rietz over-range scale extensions, an unusual BI scale, plus the Pythagorean scale (P) on the front with expanded Trig scales, plus a side log scale on the bottom, and top cm ruler. Slide reverse has 3 log log scales (ex). Scales are self documenting on the right side. Enjoyable to use, and lovely to look at, every surface has been used to do something useful. Pic is one of the actual rules offered. This is an amazing rule treasure, don't miss your chance to get a new MINT set, no more new stock once these are gone. One set is missing the zipper pull tab, we are trying to repair that now. (14 Scales, 6 Cursor Lines, Addiator and cm ruler) (RH) Front - cm/ K, A, [ B, BI, CI, C, ] D, S, ST, T, P Back - Addiator and 3 (ex) scales (LL1, LL2, LL3). Top Side - cm ruler Bottom Side - L |
SORRY, SOLD Includes: Travel Case Stylus Manuals ![]() Travel Cased Set $225
FC 111/54A Travel Cased Set |
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