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 6645-00-124-2563
NSN 6645-00-819-5045
NSN 6110-00-422-4973
NSN 5990-01-386-5561
NSN 5965-01-122-7477
NSN 6620-00-169-1609
NSN 5915-00-346-2611
NSN 6150-01-173-5949
NSN 5895-01-543-2219
NSN 2925-01-411-8002
NSN 4140-01-534-1008
NSN 6685-01-550-4605