An instrument which measures the ratio of electrical power with reference to a predetermined value and is calibrated in units of sound intensity, usually decibels. The value may be expressed by means of a pointer and calibrated dial or a digital readout display. if other than audio frequency ranges, see meter, noise level.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 5925-01-204-8583
NSN 6135-00-488-4478
NSN 5915-00-009-6494
NSN 5996-01-444-3915
NSN 6650-00-531-6664
NSN 5905-01-432-0136
NSN 6105-01-079-6690
NSN 6105-01-578-6551
NSN 7035-00-800-0770
NSN 5985-01-439-1382
NSN 6240-01-175-3877
NSN 5925-00-810-5279