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 6650-01-181-6037
NSN 6320-01-439-5264
NSN 6650-01-615-3416
NSN 5999-01-191-7300
NSN 5925-01-400-3002
NSN 5950-01-501-7162
NSN 6685-01-419-6255
NSN 5855-00-089-3974
NSN 6610-00-967-3054
NSN 6220-01-157-2930
NSN 6135-00-519-1325
NSN 5965-01-436-0390