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 5990-01-544-0364
NSN 5910-01-317-1668
NSN 4140-01-559-0846
NSN 5999-00-139-3400
NSN 5910-00-109-0522
NSN 5895-00-111-8334
NSN 5965-00-208-4896
NSN 5920-00-854-8459
NSN 5855-00-256-5562
NSN 5895-01-504-5120
NSN 5985-00-441-9608
NSN 5965-01-504-1799