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Jan 10, 2022 · "The Hamilton Model 21 was not only the solution to that urgent wartime need: it also proved to be the ultimate development of the mechanical marine chronometer and, in terms of performance, stands as probably the finest-ever design of the mechanical form of the instrument."
World War II Hamilton Model 21 Two Day Marine Chronometer in original mahogany case. This good example of Hamilton’s justifiably famous marine chronometer is a specialized timekeeper for determining longitude at sea.
Apr 24, 2022 · To the happy owners of a true Hamilton model 21, I have a few questions: a) Do you keep it running all the time? b) Can parts be sourced? c) What is the regular service interval? d) Given the age (i.e. near 80 years), do they still keep good time?
A Hamilton model 21 marine chronometer now in the form of a desk clock, the movement in gimballed brass bowl mounted on trunnions within a semi-circular brass frame above a circular brass base -- diameter 4in.
Details. An American mahogany and brass-bound Hamilton Model 21 two day marine chronometer, mid 20th century. The three tier box with drop down hands and plaque to the front inscribed HAMILTON WATCH COMPANY/LANCASTER.PENNSYLVANIA./U.S.A., the 9.5cm. diameter silvered dial with Arabic chapters, with up/down dial at 12, signed HAMILTON/LANCASTER ...
An American Hamilton Model 21 two-day marine chronometer with electric contacts. Hamilton, No. 2E12988. Circa 1945. The movement signed MODEL 21 14 JEWELS HAMILTON WATCH CO. LANCASTER.
Jul 19, 2018 · Hamilton Model 21 Ships Chronometer. Here is some thing when Hamilton was made in the USA. Just added this to the collection a Hamilton Model 21 Ships chronometer. Before GPS every ship needed one of these to do Navigation they used it to find the Longitude.
