WristScan

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A museum Imperial Japanese Navy Reconnaissance Weems

There is now substantial documentation discovered by Andy Tolley about Mitsui, a Japanese Conglomerate Trading company and Mitsubishi Conglomerate Trading company acquiring these flying instruments years before the Attack on Pearl Harbor.

This one was on exhibit at one of the most comprehensive and prestigious watch and clock museums in the United States. Approximately 20 around the world are known to exist.








In the 1930s-1940s, The Weems Celestial Navigation and the Weems watch was vital for long range navigation over open water. Radio Beacon navigation like Loran and Oboe did not exist until late in the War.


The British, French, and Americans wanted to strengthen the Imperial Navy/Army Air Services to combat the Germans and Russians during WW1 and Interwar era. The Japanese were allied with the British and French in WW1 so the modernization of the largest air forces in the in the world made sense.