An instrument used to count the frequency of recurrent electronic events and display the count on the panel of the instrument in numeric form. May also include facilities for a readout printed on tape. May include facilities for a very accurate output which can be used as a secondary transfer standard. It can be used to measure frequency, period, time interval, phase angle, frequency ratio, and for multiple period averaging. See also counter, electronic, digital and indicator, digital display.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 6610-01-340-1761
NSN 5855-01-180-5369
NSN 6620-01-292-5072
NSN 6105-00-908-6977
NSN 6110-01-421-1564
NSN 5920-01-126-6722
NSN 5930-01-173-0006
NSN 5998-01-555-5341
NSN 5930-01-277-3349
NSN 6610-01-467-7068
NSN 6645-01-615-1052
NSN 5945-01-012-2448