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 5996-01-408-5632
NSN 5996-01-605-3377
NSN 5895-01-296-8843
NSN 5910-01-631-4054
NSN 6320-01-171-3238
NSN 6685-00-418-2973
NSN 6645-01-177-6021
NSN 7035-01-558-1117
NSN 5998-01-068-8727
NSN 4140-01-372-5718
NSN 5930-01-350-2285
NSN 6685-01-200-8184