DRAFTING TOOLS AND SLIDE RULES, KEUFFEL & ESSER.

Mostly American, mid 20th century. Two maple T squares, 32.5", 36"l., compass, drafting brushes and a group of slide rules including aluminum. Four in cases including three by Keuffel & Esser. Togethe

(2) VINTAGE DRAFTING TOOLS Includes: Map wheel compass made in Germany, in original leather case & Keuffel Esser slide rule in leather case ; Condition - Scuffs to ruler case ; Measures: Case is 13" l

Keuffel& Esser Co. Leroy lettering set and slide rule model no.4081-5 (comes with brown leather case that is missing the top flap). WescosaQuality tools come in a black carrying case that is marked 20

KEUFFEL & ESSER CO NO. 461294 PAT. APRIL 1'24 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -DAMAGED CASE (SEE IMAGES)

KEUFFEL & ESSER CO 4061 6" | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE (DAMAGED) -HS5721

KEUFFEL & ESSER CO NO. 4053-3 BOX CASE BOOKLETS POLYPHASE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -GREAT GREEN L

KEUFFEL & ESSER CO. NY NO. 4002-3 SLIDE RULE pAT jUNE5'00, DEC 22 '08, APRIL1 '24 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VIN

Pair of mid-20th century surveying tools by Keuffel & Esser Co. (drafting instrument and supplies company founded in 1867 by two German immigrants); one WW2 era Cooke Radio Slide Rule, model #4139, de

Keuffel & Esser slide rule & gradient tool, both in case. In the slide rule the name "Lewis" is scratched in the center bottom, it has serial, or model number 4087T,small brown stain spots throughout

1927 bound catalog of papers, drafting instruments, slide rules, measuring tapes and more. State: City: Date:1927 Provenance: Stuart Mackenzie Montana Ephemera Collection

KEUFFEL & ESSER CO 4081-3 LOG LOG DEPLUX DECITIRIG WITH CASE PATS; 2500460, 2168056,2170144,2285722, 2422649 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING

KEUFFEL & ESSER CO 4081-3 LOG LOG DEPLUX DECITIRIG WITH CASE PATS; 2500460, 2168056,2170144,2285722, 2422649 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING

Group of Keuffel and Esser Company Machinist's Tools: Included 3 different protractors in envelopes (one damaged), slide rule manual, anvil drop pen and pencil 914 with box, draftsman dry clean pad 30

Thacher's Calculating Instrument, Cylindrical Slide-Rule, Keuffel & Esser Co., in original box, case is 24" by 6.75 by 6.25". In great condition.

LOT 2 SLIDE RULER AND SLIDE RULE BOOK CONTAINS: "THE SLIDE RULE AND LOGARITHMIC TABLES BY CLARK, PICKET n902-es SIMPLEX TRIG SLIDE RULE, KEUFFEL & ESSER CO n4053-3 PAT1,934,232 | VINTAGE COLLECTIBLE S

Nice grouping

BOOK AND SLIDE RULE LOT ACUMATH ACUMATH NO. 500 MATH, STERLING 10' SLIDE RULE NO. 584, KEUFFEL & ESSER C CLOTH, PICKETT BOOK "HOW TO USE BASIC SLIDE RULES", "THE LOG LOG DUPLEX TRIG SLIDE RULE" BOOK K

Lot of two vintage slide rules. Each includes a case, one can snap shut. Each slide rule reads as KEUFFEL & ESSER CO. Includes patent info. Wear is consistent with age and use. Each measures approx 12

Thacher's Calculating Instrument, 1881 Model 1740, American cylindrical slide-rule, manufactured by Keuffel & Esser, New York, serial no. 435, with original manual (dated 1884) in mahogany case. An e

Ten (10) Keuffel & Esser (K&E) Slide Rules. 1st item: K&E 4061 Polyphase Duplex slide rule. Comprised of two-sided celluloid coated mahogany, with frameless glass cursor with plastic edges held togeth

Seven (7) Keuffel & Esser (K&E) duplex slide rules, including two (2) 4160 Chemist's slide rules; one (1) N4081-5 20" Log Log Decitrig slide rule; one (1) 68-1200 Log Log Duplex slide rule; one (1) 40

A Keuffel & Esser Co., New York mahogany slide rule, first half 20th century, raised on small cast iron feet, fitted into an ebonized case, together with a similar German slide rule in a teak wood cas

DESCRIPTION: Vintage Keuffel & Esser Co. log log duplex decitrig slide rule featuring marks for calculating various mathematical functions from arithmetic to trigonometry to algebra. Includes orange l

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