Marine Chronometer with Audible Signals, c.1940
A marine survey chronometer, two-day duration with Arnold type spring detent escapement and electrical contact mechanism to deliver audible signals at one second intervals through earphones, silvered dial signed Glasshutte Uhrenbetriebe, No.6854. Two-part gimballed case with glazed top lid and padded outer protective box with leather strap and buckle. Ratchet type winding key. c.1940
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