On Sale

Aristo Studio 0968 – Full Size Rule
Aristo Studio 0968 – Full Size Rule

Aristo Studio 0968 – Full Size Rule

USD $55

This is an advanced 24 scale rule that features all the luxuries found on Aristo’s higher end rules: rubber feet on both sides for desktop use, black and red scales, and yellow contrast bands for easy reading.  This rule also include a second accessory ruler student rule with metric and imperial rulers, conversion tables, and unit references.

Scales include:
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

Stock: 1

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Post / Hemmi 1447 – Full Size Rule
Post / Hemmi 1447 – Full Size Rule

Post / Hemmi 1447 – Full Size Rule

USD $39

This is an introductory student rule with 9 scales, and useful formulas and conversion data tables on the reverse side.  Great for beginners and collectors alike.

Scales include:
Front – A, B, CI, C, D, K, S, L, T
Back – Formulas and data table

Stock: 1

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Pickett N500 ES (damaged case) – Full Size Rule
Pickett N500 ES (damaged case) – Full Size Rule

Pickett N500 ES (damaged case) – Full Size Rule

USD $129

One of Pickett’s more advanced rules, this 22 scale, aluminum body rule comes in Eye-saver yellow (ES), with black and red scales. This is a very sophisticated Log Log rule, made in the trademark aluminum body format by Pickett.  The original case on this rule has some wear and damage, but does come with the belt loop accessory.

Scales include:
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

Stock: 1

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Class D(ish) Faber Castell 2/83N, Brown Case
Class D(ish) Faber Castell 2/83N, Brown Case

Class D(ish) Faber Castell 2/83N, Brown Case

USD $165

Class D(ish): What happens when you have a rule of this type that’s missing a box and some other items, that’s not quite a Class D, but isn’t quite a Class E?  The result?  The Dish Class.  Reasonable condition.  Visible/pronounced scale bleeding on both sides, the case on this rule isn’t as nice as a full Class D, but it’s also on sale…

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Case, original manual, and accessory rule.

Scales include:
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

Stock: 1

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Pickett N902-ES (damaged case) – Full Size Rule
Pickett N902-ES (damaged case) – Full Size Rule

Pickett N902-ES (damaged case) – Full Size Rule

USD $49

ES (Eye-Saver) Yellow aluminum construction, high-quality American made, Pickett rule.  An excellent student rule with good trig capability, that never loses its instruction manual (it’s printed on the back).

The case on this rule is damaged and in poor condition.

Scales include:
Front – K, A, [ B, T, S, CI, C, ] D, L
Back – instructions, fractional/decimal equivalents

Stock: 1

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K&E GP12 – Full Size Rule
K&E GP12 – Full Size Rule

K&E GP12 – Full Size Rule

USD $65

This is a rare opportunity to get this exceptionally useful late version Ivorite body rule from K+E (68-1565), with mint gold-embossed, black sewn leather case.  This very late (1964 scale copyright) modern style rule has the unique inch/cm converter scales and rulers on the rear side. A very attractive and useful rule, with dual Sq scales, trig and folded scales, plus the metric conversion/rulers/log calculator on the rear face.

It has the sloped end brace style of the Deci-lon, but made in plastic, rather than metal, a very nice looking set, and not easy to find, especially in such good condition.

Scales include:
Front – Sq1, Sq2, DF, [ CF, T, SRT, S, CI, C, ] D, A, K
Back – number, [ cm, (factors and data) inch, ] Logarithm

Stock: 1

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Faber Castell 157/87 – Full Size Rule
Faber Castell 157/87 – Full Size Rule

Faber Castell 157/87 – Full Size Rule

USD $25

This may be a 10 scale student rule, but Faber Castell does not do anything by halves.  Features high-contrast coloring on the scales, an imperial rule on the upper edge, and includes an instruction manual.

Scales include:
Front – K, A, B, CI, C, D, L, S, ST, T
Back – Blank

Stock: 1

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Hemmi P50 Student Rule – Full Size Rule
Hemmi P50 Student Rule – Full Size Rule

Hemmi P50 Student Rule – Full Size Rule

USD $35

This is an excellent starter rule which features additional markings on the scales to help explain the core functions of multiplication and division.

Scales include:
Front – A, B, CI, C, D, K, S, L, T
Back – Blank

Stock: 3

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UTO 503 – Full Size Rule
UTO 503 – Full Size Rule

UTO 503 – Full Size Rule

USD $29

An economical and practical student rule for the beginner slide rule enthusiast!  Plastic body, with contrast color slide for easier reading.  Comes with a leatherette case.

Scales include:
Front – L, K, A, B, CI, C, D, ST, T, S
Back – Blank

Stock: 2

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UTO No. 1 – Full Size Rule
UTO No. 1 – Full Size Rule

UTO No. 1 – Full Size Rule

USD $25

A clear and easy to read student rule, with yellow (taupe?) contrast bands on the rule for easier reading.  Includes a leatherette case.

Scales include:
Front – A, DF, CF, CIF, CI, C, D, K
Back – Blank

Stock: 2

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UTO 561 – Full Size Rule
UTO 561 – Full Size Rule

UTO 561 – Full Size Rule

USD $29

An economical and practical student rule for the beginner slide rule enthusiast!  Plastic body, with contrast color slide for easier reading.

Scales include:
Front – L, A, DF, CF, CI, C, D, ST, T, S
Back – Blank

Stock: 1

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Musigraph 100
Musigraph 100

Musigraph 100

USD $25

An unusual slide rule for music theory, which to the best of our understanding is used for helping to convert between musical scales.

Manual and documentation can be found here.  If we knew the first thing about music, this link would almost certainly be invaluable.

Stock: 1

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Staedtler Mars 54408N (Class B) – Full Size Rule
Staedtler Mars 54408N (Class B) – Full Size Rule

Staedtler Mars 54408N (Class B) – Full Size Rule

USD $75

This 24 scale full size rule features a green slide for easy reading, and high-contrast black and red scales.  Comes with the original blue leather Staedtler case.

This rule has damage to one of the end brackets, and has been discounted.

Scales include:
Front – CI, T, ST, DF, CF, CIF, CI, C, D, P, S, CS
Back – LL01, LL02, LL03, A, B, L, K, C, D, LL3, LL2, LL1

Stock: 1

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Class A Faber Castell 2/83N, Green Case
Class A Faber Castell 2/83N, Green Case

Class A Faber Castell 2/83N, Green Case

USD $425

Class A (reduced from USD$495): Excellent/mint condition.  Green cases may have some small dark spots/discoloration, brown cases have no discoloration.  May have some minor scale bleeding on the reverse side of the rule (non-color side).

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Original box, case, original manual in Spanish, reprint manual in English, and accessory rule.

Scales include:
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

Stock: 2

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Class A Faber Castell 2/83N, Brown Case
Class A Faber Castell 2/83N, Brown Case

Class A Faber Castell 2/83N, Brown Case

USD $425

Class A (reduced from USD$495): Excellent/mint condition.  Green cases may have some small dark spots/discoloration, brown cases have no discoloration.  May have some minor scale bleeding on the reverse side of the rule (non-color side).

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Original box, case, original manual in Spanish, reprint manual in English, and accessory rule.

Scales include:
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

Stock: 3

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Class B Faber Castell 2/83N, Green Case
Class B Faber Castell 2/83N, Green Case

Class B Faber Castell 2/83N, Green Case

USD $375

Class B (reduced from USD$425): Very good condition.  Green cases may have some dark spots/discoloration.  Some scale bleeding on reverse side (not the full color side) of the rule.

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Original box, case, original manual in Spanish, reprint manual in English, and accessory rule.

Scales include:
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

Stock: 9

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Class B Faber Castell 2/83N, Brown Case
Class B Faber Castell 2/83N, Brown Case

Class B Faber Castell 2/83N, Brown Case

USD $375

Class B (reduced from USD$425): Very good condition.  Green cases may have some dark spots/discoloration.  Some scale bleeding on reverse side (not the full color side) of the rule.

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Original box, case, original manual in Spanish, reprint manual in English, and accessory rule.

Scales include:
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

Stock: 5

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Class C Faber Castell 2/83N, Green Case
Class C Faber Castell 2/83N, Green Case

Class C Faber Castell 2/83N, Green Case

USD $325

Class C (reduced from USD$375): Good condition.  Some visible scale bleeding on one or both sides.  Some dark spots or discoloration on case.

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Original box, case, original manual in Spanish, reprint manual in English, and accessory rule.

Scales include:
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

Stock: 8

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Class C Faber Castell 2/83N, Brown Case
Class C Faber Castell 2/83N, Brown Case

Class C Faber Castell 2/83N, Brown Case

USD $325

Class C (reduced from USD$375): Good condition.  Some visible scale bleeding on one or both sides.  Some dark spots or discoloration on case.

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Original box, case, original manual in Spanish, reprint manual in English, and accessory rule.

Scales include:
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

Stock: 2

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Class D Faber Castell 2/83N, Green Case
Class D Faber Castell 2/83N, Green Case

Class D Faber Castell 2/83N, Green Case

USD $275

Class D (reduced from USD$325): Reasonable condition.  Visible/pronounced scale bleeding on both sides, case may have considerable dark spots and/or discoloration.

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Original box, case, original manual in Spanish, reprint manual in English, and accessory rule.

Scales include:
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

Stock: 12

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Class D Faber Castell 2/83N, Brown Case
Class D Faber Castell 2/83N, Brown Case

Class D Faber Castell 2/83N, Brown Case

USD $275

Class D (reduced from USD$325): Reasonable condition.  Visible/pronounced scale bleeding on both sides, case may have considerable dark spots and/or discoloration.

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Original box, case, original manual in Spanish, reprint manual in English, and accessory rule.

Scales include:
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

Stock: 3

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Class E Faber Castell 2/83N, Green Case
Class E Faber Castell 2/83N, Green Case

Class E Faber Castell 2/83N, Green Case

USD $125

Class E: Poor condition.  Extensive scale bleeding and discoloration on one or both sides.  Case may have considerable dark spots and discoloration.

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Original box, case, original manual in Spanish, reprint manual in English, and accessory rule.

Scales include:
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

Stock: 1

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Class E Faber Castell 2/83N, Brown Case
Class E Faber Castell 2/83N, Brown Case

Class E Faber Castell 2/83N, Brown Case

USD $125

Class E: Poor condition.  Extensive scale bleeding and discoloration on one or both sides.  Case may have considerable dark spots and discoloration.

Considered to be the most advanced slide rule produced: gold anodized adjustable aluminum end braces, duplex 5/4-line cursor, two color (red/black) scale markings, and trademark mint green stripe on primary scales (both sides), plus additional blue stripes on the A and B scales, and massive 2 1/4″ wide body.  Expanded W square root scales, for both the square root of x and 10x, 8 log log scales, and raised rubber bumpers to prevent cursor scraping, and to give the rule grip on a desktop.  Body is fully alignable at the aluminum end-pieces, and provides finger grip areas on the slide for better movement.  Cursor pops off (note the recess on the side bars) for easy cleaning, while retaining its alignment, a very handy feature!  Rule is self documenting on right hand side for all scales. Has Pythagorean scale (P), expanded square scales, folded scales and scale over-ranges.  Includes: Original box, case, original manual in Spanish, reprint manual in English, and accessory rule.

Scales include:
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

Stock: 2

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