THE DTMB MARK 1 MOD 1 KNOTMETER.
DAVID TAYLOR MODEL BASIN WASHINGTON D C HYDROMECHANICS LAB
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The DTMB Mark 1 Mod 1 Knotmeter is a modification to the previously developed Mark 1 Knotmeter and consists of a substitution of transistorized instrumentation for vacuum-tube instrumentation. This change tends to improve the reliability of the system but does not alter its calibration. Author
- Marine Engineering
- Recording and Playback Devices