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 5985-01-437-6150
NSN 6620-01-157-9267
NSN 6220-00-282-9714
NSN 6645-00-849-4429
NSN 5925-00-004-7703
NSN 5965-00-711-6419
NSN 5960-00-303-3675
NSN 6650-01-065-2796
NSN 6645-00-232-4070
NSN 5996-01-604-9653
NSN 5855-01-361-9787
NSN 5835-01-354-0566