Chronometer
A portable time piece of superior construction, with heavy compensation balance, and usually beating half seconds; intended for keeping very accurate time for astronomers, watchmakers, etc. See Fig. 60.
How to true a balance, repair a chipped dial, temper a spring or test a stone — the working bench-book of the American watch trade, arranged A to Z.
A portable time piece of superior construction, with heavy compensation balance, and usually beating half seconds; intended for keeping very accurate time for astronomers, watchmakers, etc. See Fig. 60.