David Crate's Quality Slide Rules (2024)

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SlideRules 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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Inexpensive,Unused Pickett Slide Rules

Pickettwas the leading maker of educational market slide rules in the U.S. Theirlow-cost rules were not necessarily a joy to behold or use, but they got thejob done and cheaply. Today, when slide rules are no longer manufactured(anywhere in the world, as far as I've been able to determine), Luddites likeme (and, perhaps you, since you're reading this) can benefit from the largereserve of unused Pickett rule sets still extant in office supply warehousesand school district auctions across the country.

ThePickett rules offered here for sale are arranged (more or less) in order ofincreasing complexity. All Pickett rules in this section are unused product.They are complete as they came when you could buy them in the collegebookstore. All have instructions, case and original packaging (the one exceptionis the N3 Powerlog, it comes with the case, only).

PlasticPickett Rules

Pickett 160C, Available in white (160C-T) or "eye-saver" yellow (160C-ES, depicted above). The 160C comes in a clear, rigid case labeled: "BREAK GLASS IN CASE OF EMERGENCY CAUSED BY COMPUTER POWER FAILURE. (Sorry, this item currently unavailble.)

Pickett Model 140. This is, perhaps, Pickett's nicest rule, (unless you prefer aluminum). Highly functional and easy to use and read. Mint-in-Box w/ all orig. pieces / accessories: case, manual. Available with black scales, only. Also available with scales in both black and red (sorry, black and red scale version is sold out.) for improved readability (inverse scales are in red, please see photo just below). - SORRY, THIS ITEM IS SOLD OUT.

PickettModel 140 Slide Rule Set

The Pickett Model 140, 22-scale log-log rule is the perfect choice for cost-conscious pedagogical applications where full-functionality, as well as consistency and completeness (manuals, cases) are desired. Scales on the 140 are: (front) LL02, LL03, DF, CF, CIF, L, CI, C, D, LL2, LL3, (back) LL01, K, A, B, Cos S, Sec T ST, T, C, D, DI, LL1. $119.

Pickett Model 125. Idenitcal to the 140 butlacking log log scales. Complete, new-condition set: $59.

Pickett"All-Metal" Rules

Pickett'stouted their aluminum rules as a rough-and-ready replacement for"frail" wooden counterparts. May have been a little"specmanship" going on, but Pickett's pricing was more considerate ofstudent's budgets.

Pickett N300 Slide Rule

Pickett N300, 5" "eye-saver" yellow aluminum technical rule. Complete set includes manual, warranty card, and box. (Also available in boring white). $149.

This Just in ...

PickettN500 Slide Rule Set

PickettN500-ES, Yikes. It's pretty cool, after all these years, to find such a thing. 10" aluminum log-log engineering rule. Complete set includes leather case, manual, warranty card, and box. $149. (Currently available only in WHITE color).

Pickett N3/N600 "Combo" Slide Rule Set

Pickett N3/N600 - you need one,I mean, two. Complete set includes leather cases (with handy pocket clip), manual, warranty card, and box. $395..

Pickett N515-T. ClevelandInstitute of Electronics special version. These rules were often seen in theevening, after dinner was cleared, on the kitchen table, where many an aspiringelectronics technician would burn the midnight oil to get a new career so theycould quit that menial job at the grocery. These are great for anyone doingwork with electrical calculations involving reactances and/or resonantfrequency (special scales). The reverse side is devoted to formulae, constants,and a special decimal point finder (should be helpful to all of you calculatoraddicts!). The rule is new-condition; leather case (gold-tone embossed"Cleveland Institue of Electronics") has a couple of small scuffs.Includes belt loop. $129.

Pickett B1. The only bamboo rule thatPickett ever sold. Made in Japan by the same folks who brought us the wonderfulLafayette rules. Ths rule has a great scale layout. Condition is new. Exquisitespecimen. Quite rare. $795.

Pickett Classroom Demo Rule

Pickett Classroom Demo Rule. Full-function,Log Log Classroom Slide Rule. Scale set matches most Pickett technical rulessuch as N800, N300. Four feet in length. Painted plywood with plastic and metalcursor. Condition is Very Good. (Sold) (Shipping on this item is FREE to anywhere in the contiguous 48 states.)

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EugeneDietzgen Co. Slide Rules

Dietzgen Cat. No. 1773 System Darmstadt Pocket Rule. Superb, German-made sliderule with remarkable functionality for a 'quasi-simplex' format. It has thebasic Arithmetic scales (C, D, C-inverse), Trigonometric scales, and threedecades of Log Log scales (reverse of slide). In addition, it is equipped withthe Squared and Cubed scales (A, B, K), a Pythagorean scale, a ruler on theobverse top edge, a metric rules on the reverse top edge, and special gaugemarks on the indicator for pi/4 and power calculation. All of it is explainedin the manual (included). It comes with a nifty pigskin slipcase. The set iscomplete, 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 forestablished customers.) $225.

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

Dietzgen Cat. No. 1771 Redi-rule. Really neat and verypractical 5-inch plastic rule. 11-scale Mannheim layout features inch and mmstraightedges. Beautifully made; high-quality production is evident in thelevel of detail and accuracy of the paint-filled marking and even the leathercase. Complete set with instructions, leather slipcase, trademark Dietzgenorange, two-piece box. The enitre set is in new condition. Instruction bookletis creased from fitting into box. Made in U.S.A. $99.

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

DietzgenCat. No. 1767 "National" Slide Rule Set. A good, quality,basic-function slide rule. Complete set, with case, instruction manual andoriginal box. (Click HERE forclose-up image of rule.) $39. SORRY, THIS ITEM IS SOLD.

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Keuffel and Esser Slide Rule Sets -

Allitems are limited availability and subject to prior sale.

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

K+E 68 1622 Polyphase (old 4053-3). Complete, mint set (photoabove) 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 goodcondition, lightly used. (no case) $195.

K+E 4161-1 Polyphase Pocket Slide Rule (photo above). New condition (boxhas 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 rareversion, in the late-style packaging. Complete set includes leather case (withpocket 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-vampedmodel numbering scheme; in fact the rule is marked "4181-1" on theend, just as they were before the new scheme was introduced. It took K+E a fewyears to make the numbering-system change-over, and by the time they had, sliderules were considered obsolete! HEREis a better photo of the rule, itself. This is a complete NOS set, includingthe green leather case with handy pocket clip, manual and care booklet inoriginal box (box does exhibit some reasonable wear). (Sold)

K+E 68 1215 Log Log Duplex DeciTrig Slide Rule (old 4081-3S). Complete mintset (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 carebooklet. Everything is in mint, unused condition - rule is factory-sealed (boxdoes show some wear). $1650.

K+E 68 1318 Log Log Duplex Trig Slide Rule (old 4080-3S). Complete mint set (photo above). This is thereincarnation of the venerable 4080, much like the decitrig, but with the trigscales marked in units of degree, minutes and seconds instead of decimal degrees.Beautiful, mahogany construction. Complete set, with case, manual, andcollateral paperwork. Mint, unused condition (box does show some wear). A rareand truly remarkable, historic item. $4000.

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

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

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

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- Frederick Post Slide Rule Sets -

Versalog II Slide Rule No. 1460. The epitome of the Versalog's exemplars; this was the final iteration of the rule with several improvements including the addition of the "A" scale, extension of R2 scale to reduce the need to reset indices, the addition of radian identification on trigonometric scales allowing direct conversion of radians to degrees and vice-versa, color-coded (3rd color, green) trig scales, mathematical notations on scale labels to clarify fnctionality, and several others. This is a flawless, like new, specimen of the model and includes the manual, which is even harder to find than the rule! $375.

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

Chemistry Slide Rule No. 1491. Has special scales forvarious chemistry-related calculations including molar concentrations / ratios,atomic weights, molecular weights, water boiling / condensing points versuspressure and temperature, and more. Click HERE tosee a close up of the front of the rule and click HERE tosee the back. Complete set includes case with removable belt clip, instructionmanual, case booklet and box. Rule and case are in new condition. Manual andbox show some slight wear. $1750.

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- Sun Hemmi Slide Rule Sets -

Sun Hemmi #266Electronics Slide Rule, Sun Hemmi #266 "Electronics" Slide Rule is designedwith the electrical/electronics engineer in mind, equipped as it is, withnumerous scales (one side of this duplex rule is completely devoted to specialscales) for the straightforward calculation of of numerous parameterspresumably of interest to Electrical Engineers and their ilk, including R-L-Ctime constants and 3-dB points, complex impedances, surge impedances(transmission lines), parallel / series network impedances, resonantfrequencies / wavelengths, dB ratios, phase relationships, and the like. Aspecial extension of the standard log-log scales enables calculations into therange 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, innavy, red and green colors. Rule is marked "SUN HEMMI JAPAN NO. 266"and "ELECTRONICS". Cursor is nickel-plated brass, with glassindicators. Set includes unused slide rule, leather case, copy of instructionmanual. Please note that this rule suffered some rust-staining while instorage, 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 CivilEngineering Slide Rule, specialized rule facilitates various problems encountered byCivil Engineers including trig/survey calculations, triangle solutions, stadiaand curve setting calculations, hydraulics and water head. With manual andbrown leather case. Unused condition. Hemmi Bamboo and celluloid. $465.

-Scientific Instruments Inc. -

SICNo. 1610. One of the most awesome circulars ever made, double-sided, withindependently 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 thickplastic facing on each side. Scales and numerals are deep-cut and paint-filled.Indicator has ball bearings on perimeter to facilitate smooth indicating. Ruleonly. (This item is not available under the terms of SlideRule Express.) $495

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- Lafayette -

Lafayette99-7099 Decimalog - This is of my personal favorite slide rules. Well laid-outscales, nice looking, compact! Click HERE foranother photo. $395.

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- Staedtler -

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

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- Acumath -

(currentlyno 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 outpanel containing a wealth of useful conversion tables and data. Rule is mintwith plastic wrapper intact. Complete with vinyl slipcase. $45.

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