Oversized Framed Slide rule. Theta Tau Slide Rule Pres

Oversized Framed Slide rule. Theta Tau Slide Rule Presented to C. Robert Nysmith. Spring 1956-- Dimensions: H: 19 inches: W: 52 inches: D: 3 inches ---

Includes Zeno Watch Basel Pilot Oversized Slide Rule Chrono Ref# 8557 & Zeno Watch Basel Ref# 4557. Both watches appear to properly function and are in very nice condition. Both include original boxes

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

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

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

A Rare Slide Rule Snuff Box, French, early 19th century, the tortoiseshell and bois durci circular box with ivorine veneer scale, the top and base with moulded relief scenes of the Louvre and Pont de

A Stanley Fuller Calculator Circular Slide Rule w. f. stanley & co. ltd., london, 1950 with a fitted wood case and brass mounting arm, together with a Fowlers: Twelve-Ten calculator. Length of first 1

Keuffel & Esser (K&E) 4012 Thacher Cylindrical Slide Rule, serial number 3596. Comprised of a brass core covered by paper marked with forty A scales, surrounded by an open rotating frame with twenty m

A Rare Cretes Opthalmic Slide Rule, French, circa 1875, signed in manuscript Regles Calcul du Dr A Cretes. Cretes Optician Rue de Rennes 66 Paris, brass surround, card scale and slide, instructions in

1st item: Eckel Dial-O-Matic Engineer's or Engineer's Log Log slide rule, manufactured by Lithocalculator Company, Arcadia, California, circa 1955. Comprised of two celluloid-coated aluminum disks, on

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

Oversize 4-ft B&W Demonstration School Slide Rule. Made in the Mid-Century era of 3 layers of masonite boards riveted together with five rubber feet on the back as well as tabs for wall mou

RELAY, NO. 82 SLIDERULE | VINTAGE ENGINEER SLIDE RULER WITH RED/BLACK CASE NOSTALGIC ALGEBRA -hs5621

The Breitling Navitimer was the evolution of the 1942 Breitling Chronomat, with its typical slide rule bezel which was used to calculate complicated operations without the help of additional tools. Br

BREITLING - a gentleman's Navitimer 92 chronograph bracelet watch. 18ct yellow gold case with slide rule bezel. Reference K30022, serial 0042. Signed automatic calibre B30. Blue dial with luminous Ara

BREITLING - a limited edition gentleman's Navitimer Montbrilliant chronograph wrist watch. Number 19 of 25. Platinum case with inner slide rule bezel. Numbered L30030.1. Signed automatic movement. Bla

Black Dial with Silver Outer Scale Black Subdials Luminescent Hands Index Hour Markers Subsidiary Second Hand.Chronograph Functions Bi-Directional Rotating Slide Rule Bezel 2nd Time Zone GMT hand Date

Breitling Navitimer 806, early steel version circa 1956, manual winding caliber Venus 178, black dial with luminous numerals, slide rule function, movement running, black leather strap with pin buckle

BREITLING - a gentleman's Breitling for Bentley Motor Speed chronograph bracelet watch. Stainless steel case with slide rule bezel. Reference A25364, serial 2397742. Signed automatic calibre B25B with

Fantastic condition stainless steel Breitling 806 chronograph watch with the manual Venus 178 Movement. 41mm stainless steel case with angled lugs, bi-directional slide-rule bezel, Breitling logo on c

BREITLING - a gentleman's Breitling For Bentley 6.75 chronograph wrist watch. Stainless steel case with slide rule bezel. Reference A44362, serial 2017128. Signed automatic calibre B44B with quick dat

BREITLING - a gentleman's Navitimer 806 chronograph wrist watch. Stainless steel case with slide rule bezel. Reference 806, serial 994118. Signed manual wind Venus calibre 178 (WOG). Black dial with b