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 6240-00-623-4784
NSN 5930-00-658-8276
NSN 5835-01-193-6192
NSN 6135-01-391-6515
NSN 5998-01-442-9918
NSN 6150-01-135-1840
NSN 5990-00-251-7060
NSN 4140-00-810-6994
NSN 5990-01-024-9659
NSN 2925-00-363-9878
NSN 5975-01-528-5727
NSN 6320-00-445-1187