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 5915-01-437-8858
NSN 5930-01-604-2195
NSN 6620-00-863-4639
NSN 6320-00-116-3658
NSN 7035-01-128-7431
NSN 5965-01-521-4452
NSN 5895-00-335-7443
NSN 6685-00-024-1109
NSN 6240-01-505-5890
NSN 6650-01-157-1667
NSN 6150-00-057-9089
NSN 5905-01-269-2162