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 5998-01-647-0669
NSN 5915-00-353-0853
NSN 5895-00-311-1674
NSN 5990-01-385-6634
NSN 6135-01-364-0667
NSN 6610-00-267-1102
NSN 6240-01-597-8430
NSN 6685-01-279-1994
NSN 5835-00-850-1475
NSN 5835-01-555-8963
NSN 6150-00-446-3317
NSN 6130-01-126-0455