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 6685-01-656-5255
NSN 6240-01-420-9255
NSN 6320-00-790-4844
NSN 6105-01-084-3053
NSN 5960-00-245-2645
NSN 6610-01-058-2366
NSN 5975-01-234-0985
NSN 5925-01-027-9508
NSN 5965-00-653-4782
NSN 5935-00-212-7920
NSN 2925-01-570-8065
NSN 6220-01-234-9151