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 6135-01-357-0621
NSN 6150-01-205-3397
NSN 6135-01-346-0851
NSN 6645-01-184-0313
NSN 5975-01-274-0322
NSN 5910-00-660-8010
NSN 2925-01-331-5039
NSN 5990-00-277-3763
NSN 5895-01-502-9873
NSN 6240-01-398-0646
NSN 5960-01-115-6840
NSN 5990-01-328-8225