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 6145-01-301-4121
NSN 5920-01-097-3178
NSN 5990-00-940-3085
NSN 5965-01-055-0102
NSN 6130-01-411-6284
NSN 5925-00-580-0869
NSN 5960-01-170-4057
NSN 5999-01-339-8659
NSN 5905-01-255-8464
NSN 5915-00-103-2631
NSN 6105-01-225-4974
NSN 5930-01-116-2944