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 5925-01-090-9631
NSN 5975-01-468-6161
NSN 6130-01-192-2084
NSN 4140-01-247-4837
NSN 6135-00-248-4102
NSN 6220-00-005-1436
NSN 6610-01-567-3026
NSN 5960-01-493-3948
NSN 5999-00-553-6335
NSN 6145-01-170-4658
NSN 6620-01-065-3742
NSN 5996-01-586-5753