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 6685-01-490-5606
NSN 5905-01-181-6561
NSN 4140-01-150-4895
NSN 5990-01-128-7599
NSN 5905-01-573-1894
NSN 6130-01-295-2076
NSN 5985-01-098-5321
NSN 4140-00-996-2248
NSN 5905-01-176-8949
NSN 5999-00-708-7542
NSN 5985-01-012-0948
NSN 4140-01-179-4507