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Aeronautic Instruments. Section V : Power Plant Instruments (1923)
NASA Technical Reports Server (NTRS) · leaf 8
POWER PLANT INSTRUMENTS VAN SICKLEN CHRONOMETRIC TACHOMETER. … Fig. 8.—Mechanism—Perspective. Fig. 7.—Mechanism—Side View.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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