What this code covers
Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
Includes
Liquid Level Float Instruments; Revolution Counters; Speedometers; Rotation Measuring Instruments and Apparatus; Oxygen Flow Indicators; Tachometers, including Engine Tachometers.
Excludes
Combination Instruments; (FSC 6695); Meteorological Instruments (FSC 6660); and Automatic Control Valves (FSG 48).