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 6685-01-555-1436
NSN 6130-01-422-7996
NSN 5950-01-555-8152
NSN 5950-01-545-5283
NSN 6130-01-442-6491
NSN 5905-00-267-9551
NSN 5965-01-629-9131
NSN 2925-01-049-8906
NSN 6105-01-634-0322
NSN 5895-01-439-6299
NSN 6320-01-098-2503
NSN 5950-00-456-0654