An instrument specifically designed to measure the amplitude and frequency of the constituents of a complex electrical wave form. May include transducer mechanism for converting sound pressure into electrical energy.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 5999-01-290-3303
NSN 6135-01-134-7222
NSN 6320-01-021-6633
NSN 6105-01-154-6960
NSN 5925-00-283-1410
NSN 6130-00-875-0835
NSN 2925-00-115-5857
NSN 5975-01-108-0213
NSN 5835-00-170-5238
NSN 5930-00-067-4111
NSN 5996-01-493-2705
NSN 5925-01-657-7860