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 6650-01-507-7004
NSN 5996-00-459-0652
NSN 5985-01-531-2887
NSN 4140-00-211-5970
NSN 5965-00-799-5490
NSN 5960-00-016-0372
NSN 5930-00-947-2319
NSN 5905-01-209-5546
NSN 5920-01-125-6469
NSN 6645-01-398-1691
NSN 5855-00-149-0766
NSN 2925-00-953-2920