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 6610-01-363-9745
NSN 6105-01-634-0322
NSN 5925-01-207-0859
NSN 5920-00-402-1752
NSN 5990-01-546-1649
NSN 4140-00-580-8508
NSN 5930-01-062-0870
NSN 5985-01-181-8153
NSN 5960-01-604-1158
NSN 5835-01-286-6499
NSN 5996-00-916-0149
NSN 5998-00-149-0726