朗格，格拉蘇蒂 i/SA，德國鐘錶工廠，機芯號 92653，錶殼號 92303，63 mm，187 g，約 1935
獨一無二的德國海軍戰艦導航觀測時計，又稱"new degrees watch"，借助十進位400度轉圈導航功能的原型款，在1935年1月24日委託出售德國空軍科技研發站 Wilhelm Niemann機師，以250 RM(德國舊馬克)成交，附格拉蘇蒂博物館出示的朗格證書
A. Lange & Söhne, Glashütte i/SA, Deutsche Uhrenfabrikation, Movement No. 92653, Case No. 92303, 63 mm, 187 g, circa 1935
A unique navigation deck watch of the German Experimental Institute for Aviation socalled "new degrees watch", the prototype of a navigation watch relying on a decimal 400 degree circle - delivered on Januar 24, 1935 to the German Experimental Institute for Aviation in person to Captain Wilhelm Niemann for the sum of 250 RM - with Lange & Söhne certificate of the watch museum Glashuette
Case: nickel. Dial: silvered. Movm.: 3/4 plate movement, gold screw compensation balance.
The cycles of the three hands on this unique piece cannot be compared with any conventional clock. The large "seconds hand" completes a rotation in 3 minutes and 37.1 seconds; the upper small dial is counting these cycles while its own cycles are in turn counted by another small dial further below.
Lange & Söhne received these exact specifications from Captain Wilhelm Niemann, who was at the time director of the navigation department at the DVL in Berlin-Adlersdorf; he initiated the introduction of the decimal 400° circle for navigational purposes. This concept of navigation divides a circle in 400 degrees and most likely goes back to revolutionary France in the late 18th century, when efforts were made to introduce a decimal time system (resulting in the creation of clocks and watches with decimal dials).
However, the 400 degree method was not followed up any further because Niemann lost his life during a training flight on March 21, 1935 and his plans were put aside – only a few months after he had received the watch.
Wilhelm Niemann (* August 25, 1892 in Ellingstedt/Schleswig; † March 21, 1935 in Beeskow)
Wilhelm Niemann was First Officer and Navigation Officer for the company "Dornier-Metallbauten GmbH" and the Ministry of Transport on the flying boat Dornier Do X. He was actually still employed as an officer by the Hamburg-America shipping company HAPAG and was only "on loan". During the trial and transport flight of Do X towards America starting on November 5, 1930, he was responsible for navigation as well as for the correspondence on the flying boat.
After taking the oath as the first post master on a flying boat on October 29, 1930 at the post office in Friedrichshafen, Lake Constance, he attended to all postal issues on board until June 1932. During the promotional Atlantic flight of the flying boat – which was at the time the largest passenger plane in the world – letters and postcards were also carried on the plane.
When he left the crew of the flying boat as well as his position as a HAPAG captain in September 1932, Niemann became director of the navigation department at the DVL in Berlin-Adlershof. He died on March 21, 1935 near Beeskow during a practice session for a flight around the world.
https://de.wikipedia.org/wiki/Wilhelm_Niemann_(Offizier), as of 09/22/2016
錶殼 非常好, 使用過
机蕊 非常好, 走動正常, 建議整修
机蕊 非常好, 走動正常, 建議整修