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 6130-01-389-1957
NSN 5998-01-232-7085
NSN 7035-01-380-6538
NSN 5855-01-286-2916
NSN 5905-01-142-1771
NSN 6130-01-263-2279
NSN 5950-00-164-6413
NSN 6130-00-707-7732
NSN 6240-01-179-1189
NSN 6320-01-470-6826
NSN 2925-00-707-6770
NSN 5985-01-133-4411