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 6150-01-509-5590
NSN 5950-00-254-7498
NSN 6135-01-108-2864
NSN 6610-01-435-5425
NSN 6610-00-038-8148
NSN 5945-00-491-5218
NSN 5999-00-905-5296
NSN 6220-01-255-0258
NSN 5990-00-153-0055
NSN 5975-00-392-1983
NSN 5960-01-105-5131
NSN 5996-01-461-8897