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Auctioneers Dr. Crott 90th Auction

318317 Droz & Cie., St. Imier, Brevete, S.G.D.G., 52 mm, 115 g, circa 1900 An extremely rare phonotelemeter with two dials, comprising fifteen 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. With box. Case: silver, tiered, small wheel in the bottom part of the band for the distance gauge. Dial: front side - enamel, Arabic numerals, outer 15 seconds chronograph, inner 5 kilometer telemeter ring, blued pointer, signature: “Mr le Ministre de la guerre appelle l’attention de M. M. les officiers sur l’emploi de ce Phonotélémètre” (“The Minister of War informs the officers on the use of the sound telemeter”). Back side - enamel, radial Roman hours, outer gauge scale calibrated for 20 kilometers, inner gauge scale calibrated for 15 kilometers, blued spade hands. Movm.: mechanical bridge movement, nickel-plated, lever escapement. Droz & Cie., St. Imier, Brevete, S.G.D.G. — 極罕見的聲波/測音器,附 兩錶盤,15秒碼錶,測距儀,公里數顯示及指南針。這是附於碼 錶,專門為測量從工作站到引爆現場的炸藥所發出的聲波距離的 安全儀器,附錶盒 39544 C: 2, 10 D: 2 M: 2, 41, 51 1.300 - 2.000 EUR 1.700 - 2.500 USD 13.000 - 20.000 HKD August Ritter von Loehr, “Perpetuale Loehr Patent”, Wien, Case No. 1141, 47 mm, 86 g, circa 1880 A gentleman’s rare pocket watch with automatic winding by oscil- lating weight Case: silver, engine-turned, reeded band, ase maker punch mark “EdNt”. Dial: enamel, radial Roman hours, auxiliary seconds, two tachymeter indicators: left: divided in four quarter miles, right: miles up to 50 miles, blued spade hands. Movm.: oscillating weight wind movement, frosted, gilt, ring balance, blued balance spring. August Ritter von Loehr, “Perpetuale Loehr Patent” 維也納 — 罕見 的男仕懷錶,附計程系統的自動上弦 39567 C: 2, 6 D: 2 M: 2, 41, 51 1.200 - 1.700 EUR 1.500 - 2.200 USD 12.000 - 17.000 HKD

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