Screw term.
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 5985-01-443-9249
NSN 5930-01-131-9782
NSN 5905-00-216-6576
NSN 6610-00-548-3452
NSN 6135-01-508-5637
NSN 6620-01-425-2750
NSN 6150-01-196-7891
NSN 6135-01-294-2131
NSN 5998-00-837-7326
NSN 5998-01-560-4033
NSN 5998-01-069-3576
NSN 6320-00-701-0437