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 6645-00-055-2170
NSN 5920-01-545-3442
NSN 5935-01-335-6624
NSN 6145-01-387-5560
NSN 5905-00-983-6014
NSN 5915-01-594-3616
NSN 5965-01-569-3332
NSN 6650-00-155-8431
NSN 5935-01-487-8791
NSN 6110-00-649-9293
NSN 6130-00-089-6274
NSN 5998-01-277-7159