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 6610-01-609-0575
NSN 6240-01-548-4593
NSN 5925-01-004-7609
NSN 5920-01-129-0320
NSN 6145-00-122-9517
NSN 5910-00-035-5534
NSN 5925-01-641-8760
NSN 6320-01-461-5866
NSN 5925-01-206-5484
NSN 6610-00-991-3858
NSN 5996-00-548-8762
NSN 2925-01-327-3069