USD $195
10″ Log Log Duplex Decitrig Slide Rule, one of K+E’s premiere duplex rules, in the final updated Ivorite format. Very good rule with green composite, K+E case and embossed logo on the leather flap. This is the updated version of the famous older 4081-3 rule, also later called the 68-1251, black and red engraved scale markings, slanted trig scale values for easy orientation and scale range data.
(21 scales)
Front – LL02, LL03, DF, [ CF, CIF, CI, C, ] D, LL3, LL2
Back – LL01, L, K, A [ B, T, SRT, S, ] D, DI, LL1
USD $65
A beginner pocket rule that includes a full manual, great for students. Still in its original factory plastic, with some discoloration on the rule.
(10 scales)
Front – DF [CF, CI, C] D
Reverse – A [S, L, T] D
Stock: 1
USD $125
5″ Pocket Mannheim Slide Rule
Beautiful miniature pocket bamboo rule with framed glass lens, black and red engraved scales, and embossed leather clip case. Has inch scale side ruler, and reversible slide with 3 additional scales.
Made by Hemmi in Japan.
(9 Scales and 5 inch side ruler)
Front inch – A, [ B, CI, C, ] D, K
Reverse – [ S, L, T ]
Stock: 1
USD $3
4.5″ x 6″ laminated pocket card, featuring the period table on one side, and common conversion factors and constants on the reverse side.
Stock: 13
USD $110
One of Nestler’s more complex pocket, late production rules, with leather case. Has 6 Log Log scales, P (Pythagorean scale), a 6 line cursor, and adjustable metal end braces. An excellent pocket rule, the equal or better of K+E’s Deci-lon, in a more compact format, with multi-line cursor. Exceptionally easy to read with red and black scale marking. All scales are self documenting on the right hand side. Some marking and fading on the rule and cursor, but in otherwise very good condition.
(24 scales!, 6 cursor lines)
Front -LL01, LL02, LL03, A [B, L, K, C] D, LL3, LL2, LL1
Reverse – CT, T, ST, DF [CF, CIF, CI, C] D, P, S, CS
Stock: 1
USD $79
4″ Pocket Mannheim Slide Rule
Beautiful miniature pocket bamboo rule with framed magnifying glass lens and original embossed leather case. Features imperial ruler on the top edge, framed magnifying glass cursor, and black/red engraved scales. A very attractive and hard to find rule, this style is always in high demand (because of the light weight, magnifier and clip case).
Made by Hemmi in Japan.
(8 Scales, 1 Ruler)
Front inch – A, [ B, CI, C, ] D
Reverse – [ S, L, T ]
Stock: 1
USD $95
Geotec 322-9001 Drafting Set w/ Case (new/mint)
Stock: 1
USD $65
An unusual circular rule that does not feature conventional scale markings, but instead self-documenting scale indications (cube, square, log, sin, etc).
(11 Scales)
Front – 11 scales
Back – Conversion factors
Stock: 1
USD $75
A capable and high quality pocket rule from Aristo, featuring black and red engraved scales, multi line cursor, and self-documenting on the right hand side. Comes with original Aristo leather slip case and instruction sheet. Case does show some separation due to age/drying.
(14 Scales, ruler, 3 cursor lines)
Front – K, A [B, CI, C] D, L cm ruler
Back – [S, ST, T]
Stock: 1
USD $245
This is an early model Hemmi duplex rule with rare G, Q, and Θ scales. It features a laminated bamboo body with black scales, and serifed fonts for the scales – which is unusual for scale markings.
(18 Scales)
Front: L, K, A [B, CI, C] D, T, GΘ
Back: Θ, RΘ, P [Q, Q1, C] LL3, LL2, LL1
Stock: 1
USD $255
10″, Engineering Versalog Slide Rule
Originally made by Sun/Hemmi, laminated bamboo construction with black and red engraved scales, self lubricating design.
Wears very well, and slides smoothly under all conditions. This is the classic high end slide rule from POST.
(23 Scales)
Front: LL0, LL/0, K, DF [CF, CIF, CI, C] D, R1, R2, L
Back: LL/1, LL/2, LL/3 [T, ST, S, C] D, LL3, LL2, LL1
Stock: 2
USD $255
Sold under the Geotec brand but made by Sun/Hemmi. The Versalog 341-3010 full size rule is an advanced and well featured rule with 23 scales. Rule and case are in excellent condition.
(23 scales)
Front: LL/1, LL/2, LL/3, TT, SecT / ST, Cos / S, C, D, LL3, LL2, LL1
Back: LL0, LL/0, K, DF, CF, CIF, CI, C, D, R1, R2, L
Stock: 1
USD $195
12.5″/10″ Full Size Slide Rule
Log Log Duplex Decitrig rule, very late Ivorite body version, used but in very good condition. Late production version of the famous 4081-3, excellent new improved cursor and metalwork. An outstanding and powerful rule, and great addition to any K+E collection. Comes with the original orange leather case.
(21 Scales)
Front – LL02, LL03, DF, [ CF, CIF, CI, C, ] D, LL3, LL2
Back – LL01, L, K, A, [ B, T, SRT, S, ] D, DI, LL1
Stock: 1
USD $59
2″ / 10″ Log Log Trig Duplex Slide Rule – Excellent low cost advanced Log Log Microline Rule.
Engraved yellow “eye saver” plastic construction, black scales. This is an early version of a very sophisticated rule, made in a low cost format by Pickett.
(20 Scales)
Front – LL2-0.1, LL3-1.0, DF [ CF, CIF, L, CI, C ] D, LL2+0.1, LL3+1.0
Back – LL0, LL00, A, [ B, S, ST, T, C ] D, K
Stock: 1
USD $250
K+E’s famous flagship Deci-Lon duplex rule, with unbreakable cursor, Ivorite body and adjustable frame. Has 8 log log scales, a split square root scale, DI and folded scales. An outstanding and powerful rule, cleverly designed.
Includes the original orange leather case with a previous owner’s name on the inner flap. Rule and case are in fair condition.
Scales include:
Front – Ln-3, Ln-2, Ln-1, Ln-0, A, [ B, T, SRT, S, C, ] D, DI, K
Back – Sq1, Sq2, DF, [ CF, CIF, L, CI, C, ] D, Ln0, Ln1, Ln2, Ln3
Stock: 1
Originating in France, this Graphoplex Manheim features black and red scales that are self-documenting on the left-hand side (unusual, since it’s normally on the right). Features a metric ruler on the upper edge, and includes the original split case, a support rule and instruction manual (French language).
(13 Scales, 1 ruler)
Front – L, K, A [B, CI, C] D, LL3, LL2, LL1
Back – cos, sin, tg, b
Sphere Research Corporation