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 4140-01-187-1819
NSN 6620-00-244-0965
NSN 6240-00-334-6766
NSN 6620-01-041-8567
NSN 5998-01-015-2193
NSN 4140-01-381-9173
NSN 6110-01-422-0825
NSN 5985-00-393-4694
NSN 6650-01-562-9944
NSN 2925-00-860-3652
NSN 5835-00-356-3825
NSN 5905-01-115-4141