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 5930-01-381-0431
NSN 5930-01-576-9697
NSN 5975-00-229-6627
NSN 2925-01-268-5464
NSN 5930-00-839-6676
NSN 5990-00-254-4825
NSN 5998-00-545-9353
NSN 5935-01-320-7839
NSN 5996-00-420-3082
NSN 5915-00-283-8670
NSN 7035-00-232-4043
NSN 6240-00-287-1988