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 5990-00-181-2220
NSN 6110-01-526-7257
NSN 5835-01-036-4951
NSN 6220-01-334-8306
NSN 7035-01-583-4983
NSN 5998-00-267-1044
NSN 6610-00-740-7103
NSN 5975-00-079-0022
NSN 5905-01-463-7143
NSN 6320-01-473-9024
NSN 6135-01-070-3865
NSN 5925-01-481-3442