Aeronautic Instruments. Section II : Altitude Instruments (1923)
NASA Technical Reports Server (NTRS) · leaf 40
40 REPORT NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS. There is attached to the trap (3), by means of a rubber tube (2), a device for flushing the manometer (1). This is operated by pressing a small knob inward, then closing the hole through … Fio. 12.—Rise-and-{?.ll inclici\tor and case disassembled. this knob by the finger and allowing the knob to be pressed outward by the spring tension. The suction produced causes the liquid to rise in the manometer tube, thus flushing it. This instrument has a range of rate of ascent up to 1,100…
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