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 5975-01-599-4740
NSN 5915-00-428-1628
NSN 5990-01-201-4852
NSN 6150-00-202-9150
NSN 6145-01-534-6168
NSN 5835-00-334-6556
NSN 4140-01-209-6625
NSN 6150-01-630-1580
NSN 5950-00-851-4221
NSN 6130-01-313-9718
NSN 2925-00-964-7128
NSN 5990-00-593-5089