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 5920-01-212-9504
NSN 5985-01-086-8396
NSN 5950-01-408-5178
NSN 5855-01-142-7530
NSN 5999-01-027-9606
NSN 5855-01-156-0417
NSN 5855-00-256-5562
NSN 2925-00-774-8247
NSN 6145-01-440-9983
NSN 6135-01-167-7604
NSN 5855-01-035-2866
NSN 5965-00-728-6734