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 6620-01-581-8283
NSN 6620-01-380-2905
NSN 5905-01-032-7778
NSN 5990-01-224-8052
NSN 6240-01-218-5187
NSN 6645-01-450-5175
NSN 4140-01-196-5232
NSN 6650-00-668-5703
NSN 6110-01-373-6096
NSN 5930-00-856-7271
NSN 5915-01-368-5668
NSN 5945-00-256-5631