Screw term.
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 5996-01-321-3092
NSN 5999-00-836-0639
NSN 6650-01-481-1165
NSN 5855-01-362-7066
NSN 6610-01-461-8180
NSN 4140-01-338-5984
NSN 5998-00-618-0235
NSN 6130-01-067-9383
NSN 5975-00-469-1443
NSN 6220-01-564-2820
NSN 6685-00-588-1525
NSN 6685-01-617-1480