6625-00-012-4752 (JBTA21-FX)
NSN 6625-00-012-4752 (NIIN 00-012-4752) is an electrical frequency meter in Federal Supply Class 6625, Electrical And Electronic Properties Measuring And Testing Instruments — an instrument which measures the rate of regularly recurring variations in an electric current or voltage and is usually calibrated in hertz (cycles per second. Manufacturer part number JBTA21-FX (Lee Co The J B T Div, CAGE 31356); also referenced as 507387 (Smiths Detection Inc.); 21FX (Custom Metering Company Inc); MK777-316 (Mkc Electronics Inc).
NIIN assigned January 1961; DEMIL A (none required); unit of issue EA (each), $498.17 gov standard price; export Schedule B 9030.90.8030; ships at 1 lb / 0.0461 cu ft. Supersedes 6625-00-669-0734 (1976).