Collection of Polyphase Duplex Decitrig Slide Rule

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

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

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

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

Keuffel & Esser Company 4081-5 twenty inch mahogany slide rule coated with white celluloid on both sides and held together with metal end pieces, in a protective leather case. Marked. Case measures ap

A collection of six vintage slide rules by K&E, including: one N4080-3 Log Log Duplex Trig SN#559691, one 4092-3 SN#257384, one N4053-3 SN#037321, one N4041 Mannheim, one 4055 Favorite Mannheim, and o

Two (2) Faber Castell, Germany scientific items, including one (1) Mathema 2/84 Full Hyperbolic duplex slide rule, comprised of white plastic with a plastic cursor with hairlines and plastic edges hel

Also includes: Goodell-Pratt Company hand drill, Stanley reticulated drill, K & E Log Log Duplex slide rule and Pickett slide rule.

Adjustable, Glass Indicator, Cracked at Glass Indicator(See pics) Case. SN- 198110

A compiled grouping of measuring tools. Rulers, K&E 4080-3 Log Log Duplex trig slide rule. Noris USA drafting set, Correx Gramm meter, rulers etc

Collection of Vintage Slide Rules and Scientific Items. Containing over 40 Various Pieces. Charts, Rulers, Mosquito Circuit Tester,

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

Collection of 50+ Vintage Slide Rule Plotter Protractor. Many housed in attractive colored sheaths or holsters, and some including box. A variety of calculations can be made with these mechanical anal

Nice grouping

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

The manual is copyright 1891 so the slide rule is potentially 1890s. This is a very early version of one of the most scientific computing devices.Date: Country (if not USA): State: City: Provenance:

A mixed selection of vintage slide rules by Pickett, including: one Model 1010-ES Trig, one Model 1010-T Duplex, one Model N902-ES Simplex Trig, and one Model N-515-T Electronic for CIE. All include b

A duo of large size vintage slide rules by K&E, including: one No. 4080-5 Log Log Duplex Trig and one No. 4051. Both clean and in functioning condition with individual leather cases. *note - both curs

Promaster collection men's Citizen Eco Drive Pilot Aviator style wrist watch with synchronized time adjustment available in 27 cities. Pilot's rotating slide rule bezel, chronograph, perpetual calenda

Very nice collection of (13) Vintage wooden slide rulers, Starrett no. 510 steel tape with original box and "Stanley Folding Rules" by Sellens book. Slide rules include Lufkin, Stanley and C-S Company

including brass scales with weights, punch, bootjack hook and two slide rules. Tallest 5 in. The Lifelong Collection of Keith and Caroline Gray, Charlotte, NC. Keith and Caroline Gray were passionate

Filotecnica Model 201 Back-Light Screen Projection Slide Rule, Italy c. 1955 In the early 1950s the company Filotecnica Salmoiraghi, well known for its precision equipment, developed a slide rule that

Rule

English, c. 1820, in boxwood and brass, double sided with numerous finely divided logarithmic scales and early form of cursor, time side with scales marked Half Sum, Lat, Diff, Time PM, Time AM, cu gr