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 5925-01-537-9049
NSN 5915-01-296-1033
NSN 5925-01-214-8249
NSN 5925-01-570-0746
NSN 6610-01-007-5997
NSN 5950-01-070-4539
NSN 4140-01-226-9670
NSN 5910-00-261-3413
NSN 5975-00-724-8501
NSN 6145-01-375-7565
NSN 6645-01-442-6476
NSN 6110-00-715-9404