The Museum of HP Calculators
More Slide Rules
A selection of slide rules at the museum which are not shown on other pages.
Arranged by company:
Acumath
Concise
Dietzgen
Empire
(AW) Faber Castel
Jensen Bros.
K&E
Lawrence Engineering
Nestler
Peerless
Perrygraf
Pickett
Post
Scientific Instruments Corp.
Sterling
Sun Hemmi
Unknown
Circular Rules:
Consise
Peerless Pump Calculator
Special Purpose Slide Rules:
Pickett Electrical Engineer's Rule
Jensen Pump Calculator
Peerless Pump Calculator
Lawrence Flashslide rule
Dole Profit Calculator by Perrygraf
Acumath
These AcuMaths were made in U.S.A and have no copyright dates.
 AcuMath 12

Compact light weight 5" white plastic simplex slide rule.
Scales A, B, C, CI, D, L, K.
Picture (~35K)
 Acumath No 130 log log decimal trig

10 inch duplex slide rule.
Scales: A,B, C, D, CI, CIF, CF, DF, L, LL0, LL00, LL1, LL2, LL3, K, S, ST, T.
White laminate over a dense black plasticlike material.
Much more heavily built and expensive looking than the AcuMaths below.
Picture (~28K)
 Acumath 400

Simple single sided 10 inch plastic slide rule with
scales: A, B, C, D, CI, L, K, S, T.
Picture (~22K)
 Acumath 400 Student Mannheim

Very similar to the above except for the extra "Student Mannheim" label,
moving of
the end supports from the top to the bottom and a thinner cursor which
hooked into grooves rather than surrounding the slide rule.
Picture (~22K)
 Acu_math 1240

Compact light weight 5" white plastic single sided slide rule.
Scales A, B, C, CI, D, L, K.
Picture (~11K)
Concise
 Concise Circular Rule

White plastic 3.2" diameter slide rule. Scales C, D, CI, A, K. Marked
Johnston Pump Company, Gendora, California. Conversion factors on back.
Made in Japan.
Picture (~12K)
Dietzgen
 Dietzgen Microglide Cat No. 1734 Decimal Trig Type Log Log

10" duplex slide rule with low glare plastic laminate over dark hardwood with nylon
inserts surrounding the slide.
Scales A, B, C, D, CI, CIF, DF, LL01, LL02, LL03, LL1, LL2, LL3, K,
T<45, T>45, S, ST. Came with a plastic table of formulas and
conversion factors to be kept in the case with the slide rule.
Made in U.S.A.
Picture (~81K)
Empire
 Empire Pedigree

Inexpensive 5" plastic slide rule. Reversible slide printed in red.
Scales A, B, C, CI, D, K, A, L, T
Made in USA.
Picture (~24K)
(AW) Faber Castel
 AW Faber Castell 1/87

Nice older style 10" slide rule with an inch scale on the slanted top surface and a
centimeter scale on the lower surface. The center slide could be used to
extend the slide ruler thanks to an extension of the centimeter scale under the
slide. Reversible slide with cos, sin/tg and ctg scales on other side.
Plastic over medium colored hardwood.
Marked "AW Faber Castell Pencil works Stein near Nuremburg 1/87 (syst. Reitz)"
Made in Germany.
Picture (~81K)
Closeup on the cursor (~23K) showing hairlines labled s, KW, d and HP.
 Faber Castell 2/82

10" white plastic duplex slide rule with black and red printing.
Scales A, B, C, D, CI, CF, DF, P, S, T1, T2, K, K1, ST, LL1, LL2, LL3,
LL03, LL02, LL01 plus inches and cm.
Golden colored end plates.
Made in Germany.
Picture (~46K)
Jensen Bros. Mfg.
 Pump Calculator

White and clear 6" inch plastic slide rule.
Computed production, static load, counterbalance load, horsepower etc.
Picture (~17K)
K&E
The following K&Es were all made in the U.S.A
 K&E N40532

8 inch older style slide rule with inch and centimeter scales. Engraved numbers.
Scales A, B, C, D, CI, and K.
This slide rule was shipped with its
leather case (6 oz total) from New York to its owner in Oregon in 1943 for
a postage of $.03.
Picture (~36K)
 K&E N40533

Like the N40532 above but in a 10 inch version. Engraved numbers.
Scales A, B, C, D, CI, and K.
Pat 1,934,232.
Picture (~29K)
Larger Picture (~54K)
 K&E 40813 Log Log Duplex Decitrig

10" white plastic over dark hardwood duplex slide rule.
Scales A, B, C, D, CF, DF, CI, CIF, K, S, ST, T, LL01, LL02, LL03,
LL1, LL2, LL3.
(c) 1947. (The Curator's father's main slide rule.)
Picture (~28K)
 K&E Decilon 68 110

Complex wide plastic 10" duplex slide rule with low glare surface.
Engraved ends of slide for easier gripping.
Scales A, B, C, D, DI, CI, CIF, CF, DF, L, Ln 0, Ln 1, Ln 2, Ln 3,
Ln3, Ln2, Ln1, Ln0, Sq 1, Sq 2, T, S, SRT, K.
(c) 1947, 1961.
Picture (~31K)
Lawrence Engineering
All of the following inexpensive painted wood slide rules were made in U.S.A.
 Lawrence Engineering Service 10B

Simple 10" slide rule. Scales A,B, C, CI, D and K. Dark Blue on white paint.
Picture (~25K)
 Lawrence Engineering Service 250BT

Simple 10" slide rule with red and black printing on white painted wood.
Single sided, scales A, B,
C, D, CI, K .
Picture (~16K)
 Lawrence Engineering Service 60p "Flashslide rule"

This unusual 5" slide rule allowed the photographer to select an aperture that was
appropriate for the shutter speed, type of photoflash lamp and film speed.
(c) 1946.
Picture (~25K)
Nestler
 Nestler No. 38

Nice older style slide rule with plastic laminate pieces screwed on to (see picture)
medium colored hardwood. Numbers are deeply engraved and painted.
Reversible slide.
Conversion Chart on reverse compiled by
C. N. Pickworth, Wh. Sc. Made in Germany.
Picture (~30K)
Peerless Pumps
 Pump Calculator

Circular cardboard calculator for Capacity, Horsepower, Efficiency,
Cost etc.
Copyright 1959.
Picture (~25K)
Perrygraf Corp.
 Dole Profit Calculator

Made for Dole by Perrygraf. Instructions on the back indicated that proper
use of the slide rule would increase unit sales of all canned fruit by 5.5%,
unit sales of pineapple by 12.3% and dollar sales of pineapple by 20.7%
by making it easier for the shopper to select and buy more items. Two
doublesided slides with scales: Percent profit of selling price,
Multisell, Retail price, No. of cans per case, Cost per case, Profit per case,
Percent profit and Canned fruit section size.
Copyright 1967.
Picture (~63K)
Pickett
The following were made in USA.
 Picket Model N4ES vector type log log dual base speed slide rule

Another complicated (and wide) model closely related to the
N3ES shown on the
slide rule instructions page.
Scales A, B, C, D, CI, CF, DF, CIF, DI, CI, T, ST, S, cube root,
square root, DF/M, CF/M, TH, SH, Ln, L, and double scales: LL1, LL2, LL3, LL4.
Yellow metal 10" slide rule.
(c) 1959.
Picture (~190K)
 Picket N500ES HI Log Log

10" yellow metal duplex slide rule.
Scales A, B, C, D, CI, CF, DF, CIF, DI, K, T, ST, S, +LL1, LL1, _LL2, LL2,
+LL3, LL3.
(c) 1962. (Inherited from the curator's grandfather.)
Picture (~25K)
 Picket Electronics model N515T

A 10" metal slide rule for electrical engineers.
Scales: 1/( (2Pi)^2 * X^2), x/(2Pi), X sub L or f sub R,
X sub C, Ln X plus the conventional A, B, C, D, CI and L.
Electrical formulas on back.
Picture (~135K)
 Picket model 800ES Log Log (SyncrhoScale)

Yellow 10" metal duplex slide rule with stylish end plates.
Scales A, B, C, D, DI, CF, CIF, CI, DF,
K, L, LL1 (+0.01, 0.01), LL2 (+0.1, 0.1),
LL3 (+1.0, 1.0), S, ST, T.
Picture (~25K)
 Picket & Eckel Model 1010

White 10" metal duplex slide rule.
Scales A, B, C, D, CI, CIF, DI, DI, ST, S, T, L, K.
(c) 1948 Pickett, A.F. Eckel.
Picture (~32K)
 Picket Model N902ES Simplex Trig

Yellow 10" single sided metal slide rule.
Scales A, B, C, D, CI, S, T, K, L.
Picture (~19K)
 Picket Model N902T Simplex Trig

Like the N902ES but in white.
Picture (~19K)
 Picket Microline 121

Molded White plastic 10" simplex slide rule.
Molded grips on slide ends. Scales A, B, C, D, CI, K, S, T, L.
Picture (~35K)
 Picket Microline 140

Molded Yellow plastic 10" duplex slide rule. Molded grips on slide ends.
Scales A, B, C, D, CF, DF, CI, CIF, K, LL0, LL00, S, ST, T, L, LL1, LL2, LL3.
(This late model inexpensive slide rule was the curator's first slide rule.)
Picture (~32K)
(Frederick) Post
 Post Versatrig 1450

10" plastic over bamboo slide rule.
Scales A, C, D, DI, CI, CIF, DF, R1, R2, L, T, Sec T, Cos S, K.
Made in Japan (Hemmi).
Picture (~29K)
 Post Versalog 1460

10" plastic over bamboo slide rule.
Scales C, D, CI, CIF, DF, R1, R2, L, K,
LL0, LL/0, LL/1, LL/2, LL/3, LL1, LL2, LL3, T, Sec T, Cos.
Made in Japan (Hemmi).
Picture (~32K)
Larger Picture (~67K)
Scientific Instruments Corp.
 Scientific Instruments No. 5510

5" plastic slide rule packed with scales A, B, C, D, CI, DI, CF, CIF, DF,
LL1, LL2, LL3, LL0, LL0, LL1, LL2,LL3, K, S, ST, T.
Copyright 1961. Made in Japan.
Picture (~32K)
Sterling
 Sterling Precision
 10" heavy white plastic slide rule with inch and cm scales on lowered edges.
Reversible slide.
Scales A, B, C, CI, D, K, S, T, L. Made in USA.
Picture (~30K)
Sun Hemmi
 Sun Hemmi NO. 34RK

This very compact 5" slide rule was made from plastic covered bamboo. It was built
in the older style with an inch slide rule on the slanted top edge. Scales: A,B,
C, D, K, CI.
Picture (~23K)
Unknown
 Unsigned 5" slide rule

White plastic with inch and cm scales on lowered top surfaces.
Scales A, B, C, CI, D, K.
Picture (~25K)
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