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 6620-01-168-8244
NSN 5855-01-225-5855
NSN 5925-01-202-5954
NSN 2925-01-436-7325
NSN 6135-01-377-5729
NSN 6620-01-641-7592
NSN 6105-01-445-6130
NSN 5975-00-467-8777
NSN 6150-01-168-8290
NSN 5910-01-359-8909
NSN 5975-01-164-7428
NSN 6145-01-133-1216