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 5990-01-411-5930
NSN 5920-00-837-2633
NSN 5915-01-379-3187
NSN 5905-00-446-9083
NSN 6150-00-007-1774
NSN 5895-01-347-1016
NSN 6145-00-153-2818
NSN 5855-00-832-9341
NSN 6650-01-654-0983
NSN 5960-00-266-6741
NSN 5945-01-512-9376
NSN 6645-01-534-5545