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 5945-01-525-8251
NSN 6610-00-851-3203
NSN 5920-01-555-6944
NSN 6610-01-459-7535
NSN 6130-00-229-7031
NSN 6145-01-411-0100
NSN 5975-00-149-0758
NSN 5985-01-109-1697
NSN 5960-01-424-0590
NSN 5990-01-443-2931
NSN 6645-01-026-6659
NSN 6645-01-535-7136