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 5998-01-050-9471
NSN 6320-01-094-2634
NSN 5945-01-317-3193
NSN 5945-00-185-4815
NSN 4140-00-189-0235
NSN 5855-01-583-6496
NSN 5935-01-370-5867
NSN 6220-01-111-9730
NSN 5975-01-563-5460
NSN 5990-00-050-4369
NSN 5855-01-605-2438
NSN 6650-00-961-9686