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 5835-00-632-8621
NSN 6645-01-302-3923
NSN 5975-01-660-9069
NSN 6130-01-168-9768
NSN 6130-00-358-4320
NSN 6220-01-058-6369
NSN 5960-01-083-3936
NSN 7035-01-411-6062
NSN 5990-00-254-4825
NSN 5925-01-430-5306
NSN 5960-01-597-9591
NSN 6105-01-579-4547