Keuffel & Esser Slide Rule Calculator Double-sided

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

Mahogany Cased Slide rule or cylinder calculator by Edwin Thatcher. Mahogany and Brass mounts. Complete, Original. Very good to excellent condition with minor signs of gentle use, but no wear or damag

Keuffel & Esser (K&E) 4090 universal slide rule, PN 19-19-19-19-19-19. Marked "Keuffel & Esser Co. N.Y., Pat. Oct. 6, 1891". Comprised of two-sided white celluloid coated mahogany, black metal framed

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

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

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

Getting all pictured

Includes leather case and original box

#4092-3

(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

Rule

Keuffel and Esser (K&E) slide rules, including one (1) Nordell Sewer Slide Rule; one (1) 4160 Chemist's 10" Mahogany Duplex slide rule; and one (1) 4088-3 Polyphase Duplex Slide Rule. All comprised of

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

Group of 5 vintage Keuffel and Esser slide rules with cases. Models include 4070-3, 4090-3, N4053-3 and two 4081-3, one with original box. Made in USA. *notes- wear on box and cases.

Group of 6 vintage Keuffel and Esser slide rules. Includes a Beginner's slide rule #4058, a 4153-1, a N4081-3, a N-4053-3>, a 4094 merchants and a 68 1434. All come with cases. One has original box as

Keuffel & Esser 4012 Thatcher Cylindrical Slide Rule, retailed by F. Weber & Co. circa 1915, fitted in its original mahogany travel case. Dimensions:dimensions of case 6 1/2 x 24 x 6 1/2in

A 1966 Keuffel and Esser Co. Pocket Slide Rule in original packaging. Comes with leather sheath and instruction manual. Made in USA.

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)

A 1966 Keuffel and Esser Co. Jet-Math slide rule #68-1576. Comes in original packaging with manual and case. Made in USA. Box measures 14 1/2" x 7". *notes- regular wear from age and storage.

A 1966 Keuffel and Esser Co. Jet-Math 68 1576 slide rule with original box, instructions and case. Slide Rule is marked 4161-3. Made in USA.

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

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

KEUFFEL & ESSER THACHER CALCULATING INSTRUMENT, slide-rule cylinder with brass mounts and wood end handles mounted on original base with operating label, original dovetailed mahogany case with interio