David Crate's Quality Slide Rules

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Slide Rules for Sale

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Inexpensive, Unused Pickett Slide Rules
Eugene Dietzgen Co. Slide Rules and Measuring Instruments
Keuffel and Esser Co. Slide Rule Sets
Frederick Post Co. Slide Rules
Sun Hemmi Chemical, Electrical and Civil Engineering Rules
Scientifc Instruments Co. Slide Rules
Lafayette
Acumath Slide Rules
Concise Circular Slide Rules
Danish Rules (Diwa, UTO)
Concise Circular Slide Rules
Special Section Devoted to Circular Slide Rules
Select, Used Rules

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Eugene Dietzgen Co. Slide Rules

Dietzgen Cat. No. 1773 System Darmstadt Pocket Rule. Superb, German-made slide rule with remarkable functionality for a 'quasi-simplex' format. It has the basic Arithmetic scales (C, D, C-inverse), Trigonometric scales, and three decades of Log Log scales (reverse of slide). In addition, it is equipped with the Squared and Cubed scales (A, B, K), a Pythagorean scale, a ruler on the obverse top edge, a metric rules on the reverse top edge, and special gauge marks on the indicator for pi/4 and power calculation. All of it is explained in the manual (included). It comes with a nifty pigskin slipcase. The set is complete, although the box is quite worn, the rule and case are like new. (Sorry, this item is not available under terms of Slide Rule Express except for established customers.) $225.

Dietzgen Cat. No. 1776 Duplex Redi-Rule Set. Very handy little model. Complete set, including case with pocket clip, instruction manual and original box. (This item is not available under terms of Slide Rule Express.) $175.

Dietzgen Cat. No. 1771 Redi-rule. Really neat and very practical 5-inch plastic rule. 11-scale Mannheim layout features inch and mm straightedges. Beautifully made; high-quality production is evident in the level of detail and accuracy of the paint-filled marking and even the leather case. Complete set with instructions, leather slipcase, trademark Dietzgen orange, two-piece box. The enitre set is in new condition. Instruction booklet is creased from fitting into box. Made in U.S.A. $69.

Dietzgen Field Book. "Field book manufactured of high grade 50% Rag Paper having a Water Resisting Surface and is sewed with Bing Special Enamel Waterproof Thread. Made in U.S.A." 16 pages of mathematical reference tables and diagrams in the back. The rest is blank - for your "field data". Approx 4 3/4" x 7 1/4". Attractive "Dietzgen" embossed cover. $36.

Dietzgen Cat. No. 1767 "National" Slide Rule Set. A good, quality, basic-function slide rule. Complete set, with case, instruction manual and original box. (Click HERE for close-up image of rule.) $39.

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Keuffel and Esser Slide Rule Sets -

All items are limited availability and subject to prior sale.

(K+E sets are not available under terms of Slide Rule Express)

K+E 68 1622 Polyphase (old 4053-3). Complete, mint set (photo above) includes slide rule, hunter-green case, manual, care booklet and box - like new. $325.

K+E 4053-2. Very rare, 8-inch version of the popular 4053. Very good condition, lightly used. (no case) $195.

K+E 4161-1 Polyphase Pocket Slide Rule (photo above). New condition (box has a missing flap and a small spot where the green surface was torn off, apparently when a price sticker was removed). This is a relatively rare version, in the late-style packaging. Complete set includes leather case (with pocket clip), instruction manual. $279.

K+E 68 1287 Log Log Duplex Decitrig Pocket Slide Rule (old 4181-1C). This is actually a 4181-1 under K+E's re-vamped model numbering scheme; in fact the rule is marked "4181-1" on the end, just as they were before the new scheme was introduced. It took K+E a few years to make the numbering-system change-over, and by the time they had, slide rules were considered obsolete! HERE is a better photo of the rule, itself. This is a complete NOS set, including the green leather case with handy pocket clip, manual and care booklet in original box (box does exhibit some reasonable wear). (Sold)

K+E 68 1215 Log Log Duplex DeciTrig Slide Rule (old 4081-3S). Complete mint set (photo above). This is the mainline K+E workhorse slide rule, the final, copyright 1947 scale set, used by technical professionals throughout the world, realized in mahogany and celluloid. Complete set, with case, manual, and care booklet. Everything is in mint, unused condition - rule is factory-sealed (box does show some wear). $1599.

K+E 68 1318 Log Log Duplex Trig Slide Rule (old 4080-3S). Complete mint set (photo above). This is the reincarnation of the venerable 4080, much like the decitrig, but with the trig scales marked in units of degree, minutes and seconds instead of decimal degrees. Beautiful, mahogany construction. Complete set, with case, manual, and collateral paperwork. Mint, unused condition (box does show some wear). A rare and truly remarkable, historic item. $1995.

K+E 68 1100 Deci Lon - Their "flagship" rule, in perfect condition. Complete, mint set includes Deci Lon slide rule, original box, chamois-lined leather case, belt-clip attachment, hardcover manual, and care booklet (Sold).

K+E 68-1130 5-inch Deci-Lon Slide Rule, (photo above). This is pretty much the Holy Grail (if you will) of slide rule collecting: K+E's slide rule apotheosis, in pocket format, unused-in-box. The box is a little marked-up and scuffed-up, but the contents are PERFECT. How many of these can there still be on this earth? These sets didn't come with a manual, but one is included for your reference. (I suppose the rationale for not including the manual was that the pocket rule was adjunct to the 10-inch model, which did come with a manual.) Price includes over-night shipping to any U.S destination. Your Satisfaction is Guaranteed. (Sold.)

K+E 4185-7 Clip-on Indictor Magnifier (photo above). Mounts on the indicator of any of these K+E 10" duplex rules, to provide better visibility and precision. Mounting clips fold up when not in use. Felt pouch, box. $95.

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- Frederick Post Slide Rule Sets -

Versalog Slide Rule No. 1460. This slide rule is a genuine classic and deservedly so, with one of the best scale layouts ever devised for professional technical work. The construction is bamboo, a wonderfully stable, mildly lubricious material. This set is unused and immaculate (the box is a little worn). It is complete with leather case, belt hook attachment, hardcover manual and warrany/care insert. $295

"Pocket" Versalog Slide Rule No. 1461. Amazing! This a complete, boxed set of the pocket version of the 1460, and exactly replicates the wonderful scale set. It is also bamboo and celluloid. This set is unused and in beautiful condition (box has a few dings). It is complete with pocker-clip leather case, softcover instructions and warrany/care insert. Hardbound Versalog Slide Rule Instructions will be included, upon request. $750.

Chemistry Slide Rule No. 1491. Has special scales for various chemistry-related calculations including molar concentrations / ratios, atomic weights, molecular weights, water boiling / condensing points versus pressure and temperature, and more. Click HERE to see a close up of the front of the rule and click HERE to see the back. Complete set includes case with removable belt clip, instruction manual, case booklet and box. Rule and case are in new condition. Manual and box show some slight wear. $1250.

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- Sun Hemmi Slide Rule Sets -

Sun Hemmi #266 Electronics Slide Rule, Sun Hemmi #266 "Electronics" Slide Rule is designed with the electrical/electronics engineer in mind, equipped as it is, with numerous scales (one side of this duplex rule is completely devoted to special scales) for the straightforward calculation of of numerous parameters presumably of interest to Electrical Engineers and their ilk, including R-L-C time constants and 3-dB points, complex impedances, surge impedances (transmission lines), parallel / series network impedances, resonant frequencies / wavelengths, dB ratios, phase relationships, and the like. A special extension of the standard log-log scales enables calculations into the range of 10^-9, for working with nanoseconds, etc.; a nice very touch. Construction is classic Hemmi bamboo and celluloid with engine cut, paint-filled graduations. The rule has some 24 scales, many multiple use, in navy, red and green colors. Rule is marked "SUN HEMMI JAPAN NO. 266" and "ELECTRONICS". Cursor is nickel-plated brass, with glass indicators. Set includes unused slide rule, leather case, copy of instruction manual. Please note that this rule suffered some rust-staining while in storage, mostly affecting just one end, around the plated steel brace. (Sorry, this item is not available under terms of Slide Rule Express.) (Sold).

Sun Hemmi #269 Civil Engineering Slide Rule, specialized rule facilitates various problems encountered by Civil Engineers including trig/survey calculations, triangle solutions, stadia and curve setting calculations, hydraulics and water head. With manual and brown leather case. Unused condition. Hemmi Bamboo and celluloid. $465.

- Scientific Instruments Inc. -

SIC No. 1610. One of the most awesome circulars ever made, double-sided, with independently rotating "slide" disk on front side. Scales are: (obverse) E1, CI, C, D, A, K, LL0, LL1, LL2, LL3, (reverse) DI, D, T, S, T, S, T, ST, LL0', LL1', LL2', LL3'; Construction is robust aluminum plate with thick plastic facing on each side. Scales and numerals are deep-cut and paint-filled. Indicator has ball bearings on perimeter to facilitate smooth indicating. Rule only. (This item is not available under the terms of Slide Rule Express.) $495

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- Lafayette -

Lafayette 99-7099 Decimalog - This is of my personal favorite slide rules. Well laid-out scales, nice looking, compact! Click HERE for another photo. $395.

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- Staedtler -

Steadtler Mars 544 28 Technical Slide Rule - This is an exquisitely beautiful and wonderfully capable rule. Complete set includes leather case, manual and box. (Sold)

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- Acumath -

(currently no Acumath)

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- Concise Circular Slide Rules -

Concise Type-E Weights and Measures, Conversion Tables and Circular Slide Rule. Five-scale circular with slide out panel containing a wealth of useful conversion tables and data. Rule is mint with plastic wrapper intact. Complete with vinyl slipcase. $45.