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 6620-01-157-0759
NSN 6150-01-360-1588
NSN 5985-01-399-3934
NSN 5910-00-948-1603
NSN 6145-01-487-8981
NSN 5855-01-249-0717
NSN 5855-01-138-3396
NSN 5910-01-343-3758
NSN 6620-01-367-0844
NSN 5930-00-636-8888
NSN 5920-00-995-6079
NSN 6650-01-633-9147