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圖錄編號
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333
圖錄編號 333*
初步估價 900 - 1,500 €
This is a lot of a former auction!

Droz & Cie., St. Imier, Brevete, S.G.D.G.

, Case No. 496566, 50 mm, 104 g, circa 1850

An extremely rare phonotelemeter with two dials, comprising five seconds chronograph, ten minutes register, sound telemeter, kilometer gauge and compass - a device consisting essentially of a stopwatch, for estimating the distance of guns in action by measuring the interval between the flash and the arrival of the sound waves from the discharge.


Case: silver. Dial: enamel, signed 'Hommage du Captain Chouvenin (Inventeur) à Mr. Le Général de Division - Directeur de L'Artillerie'. Movm.: 1/2 plate movement, screw compensation balance.
#42231
錶殼 非常好, 使用過
錶盤 非常好, 多處極細的裂紋
机蕊 好, 輕微氧化, 走動正常, 建議整修


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