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 5998-01-573-0969
NSN 5925-01-519-8048
NSN 6685-00-226-1885
NSN 6650-00-269-5000
NSN 5998-01-224-7112
NSN 5996-01-541-4482
NSN 5950-00-243-2011
NSN 6320-00-908-6841
NSN 5920-00-481-8945
NSN 6320-01-029-4220
NSN 6105-01-025-7488
NSN 5905-01-565-9291