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 5930-01-514-0273
NSN 5950-00-767-5925
NSN 6620-00-280-2874
NSN 6110-01-056-4378
NSN 6645-01-526-5989
NSN 6620-00-323-8326
NSN 6145-01-217-4749
NSN 5998-01-188-7555
NSN 6240-01-174-1907
NSN 7035-00-830-1235
NSN 5835-01-416-6449
NSN 4140-00-619-8062