Calculagraph Elapsed Time Computer

Vintage calculagraph. The Calculagraph is a device which mechanically calculates and prints the elapsed time between two events. Their best known, earliest use was as a means of tracking of table usag

Office Time Clock, Calculagraph Model 110 key wound, early 20th C., for recording elapsed time on cards, VG untested cond w/wear & small lens chips, 10.5"Dia.

Vintage 1973 Tiffany & Co. Pulsar Time Computer Stainless Steel Watch. Serial No. 116350. Stainless steel bracelet with stainless steel fold over clasp. Weight: 2.5 oz. Untested, needs batteries. Plea

Men's Watch. Time Computer, Inc. men's 14kt gold wrist watch - 1976, no. 136778. With a domestic alligator band. From a Teaneck, NJ estate.

VINTAGE HAMILTON/PULSAR 14K TIME COMPUTER QUARTZ WRISTWATCH WITH STAINLESS BRACELET WITH ORIGINAL BOX AND PAPERS

Tiffany & Co. Pulsar Time Computer/watch, in original box Provenance: Estate of Dina Recanati 944 5th Ave, New York

Circa 1973. Fully linked futuristic bracelet. Clasp marked "P" on outside and inner clasp marked "Time Computer Inc. Stainless Steel Bear Japan". Stainless steel cushion case. Buttons on both sides of

Pulsar 10k Gold Filled Wrist Watch: Scratched red plastic top cover. Inscribed on back for outstanding service. From 1976.

New York,Early 20th Century Calculagraphs were often used to measure the duration of toll telephone calls. Clock face embossed "MADE BY CALCULAGRAPH CO., NEW YORK, U.S.A." 10" diameter,Metal, glass

Rare Early 20th Century "Elapsed Time Switch" in white enameled metal with chromed base. Plaque on back marked "Edison Electric Appliance Co." and "General Electric Co." with serial no. 18868 and type

Cartier, Pasha, Stainless Steel, Quartz, Ref. 1050, Circa 1990s Case: 38mm, stainless stee

Watch. A Breitling Aerospace Navitimer quartz watch Ref #.80360. This watch features approx. 40mm (excluding crown) titanium round watch case, sapphire crystal, unidirectional 0-60 elapsed-time steel

CHRONOGRAPH COCKPIT CLOCK R.A.F. Smiths/Jaeger LeCoultre "Time of Trip", c. 1953, elapsed time indicator, British Broad Arrow mark on original leather case back, 37-size, painted face, winds and ticks

Comprising four gentlemen's watches, a cufflink watch, a ladies watch. Three quartz timepieces include Movado, Seiko, Forneau. Pulsar gold-filled time computer, ca. 1972. Swiss "Taylorette" mechanical

Marked "Time Computer, Inc USA, Stainless Steel Pulsar 221478".

with quartz movement, 1 1/8" diameter 6 1/4 bracelet (has extra link) serial # 585658 together with a Pulsar Time Computer 14k gold filled wrist watch, serial # 208474

Track time, elapsed time, date and seconds with this easy-to-read men's chronograph watch from Rotary. The black dial showcases three subdials, large indexes and white hands, all set in a 42mm black i

Pulsar 14k Gold Filled Wrist Watch: Time Computer Inc. USA. Number 193637. Light scratching.

[NAVIGATION]. LAX, William (1761-1836). A Method of Finding the Latitude of a Place, by means of Two Altitudes of the Sun and the Time Elapsed. [London?]: [s.n.], [1799]. 4to (279 x 222 mm). Folding t

Time Clock Calculagraph, c. 1925 By Calculagraph Company, New York, USA. Used to bill the used time by telephone companies and further offices. 110 V. "Calculagraph", 1925 Rechenuhr gemäß U.S.-Paten

Size: 38mm case size excluding crown 27mm face. Type: TAG Heuer Swiss precision ETA 251.262 quartz movement, 27 jewels. Features: Date display, unidirectional rotating bezel, elapsed and split time 12

Clock face reads MADE BY CALCULAGRAPH NEW YORK USA. Piece is black toned and iron with 2 handles. Beveled glass window in front of clock face. Clock face is silver toned with black hands & numbers. Pi

This is the first time a vintage Rocketry patent application document has ever been offered at auction. This is from Rocket pioneer Hans Hosenthien and is dated from1949. This application is for pione

International Time Recording Co. Clock No. 312-A. Quarter sawn oak case. double-sided. 15 x 15 x 7 in. From the private collection of the Calculagraph Co. East Hanover, New Jersey and the proceeding t