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 5835-01-555-8963
NSN 6220-01-590-3094
NSN 6130-01-371-1049
NSN 6610-01-438-6896
NSN 6645-01-176-6866
NSN 5996-00-825-7240
NSN 5960-01-252-8821
NSN 5998-00-356-1675
NSN 5950-01-504-3967
NSN 6620-00-185-1671
NSN 5998-00-852-8144
NSN 4140-00-337-6631