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 or cps). The value may be expressed by means of a pointer and calibrated dial vibrating reed or a digital read out display. For instruments which measure radio frequencies, see calibrator, frequency; and wavementer. excludes: counter electronic digital.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 5920-01-274-0837
NSN 6240-00-275-1950
NSN 5925-00-466-7308
NSN 7035-01-426-4133
NSN 5960-00-494-8937
NSN 5915-01-501-5895
NSN 5935-01-036-9939
NSN 5915-01-597-9432
NSN 5975-00-905-5194
NSN 6145-01-536-8849
NSN 6130-00-499-1439
NSN 6685-01-532-4278