Hallo ik heb een 10 seconden per omwenteling stopwatch op achterkant van de kast veel informatie.
Weet iemand wat de toepassing hiervan was.
Info op kast:
Navigation.Type A6
Specification MIL-W-6510
Mfr’s.part No Telectro TW-171
TELECTRO INDUSTRIES CORP.
Mfr’sSerial No. 741
Order No. (600)20573
Stock No.8TAA-982000
U.S.Property
edit:
Hier nog een stukje genomen van The Watchsite
Type A-6
The Type A-6 was designed as a master timepiece to keep the solar and sidereal time during navigation missions. It consisted of two standard white face railroad grade watches, mounted in a vibration-proof wooden case, which incorporated a window to permit observation. It was similar to the Type A-4, except that the second-hand setting position was obtained by use of a secondary stopwatch. A limited procurement was made in August 1934. The Type A-6 was changed to a limited standard in May 1940, and declared obsolete in November 1943.
En hier nog een draadje op Wus
