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 6240-01-544-5452
NSN 5965-01-619-4891
NSN 5998-01-534-9796
NSN 5998-00-759-2574
NSN 6130-00-121-7789
NSN 6645-01-258-3229
NSN 6645-01-049-0972
NSN 6685-00-737-1959
NSN 6620-00-366-1365
NSN 6105-01-649-9841
NSN 5935-01-051-1704
NSN 7035-00-541-8516