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 5985-01-142-8735
NSN 5950-00-933-7713
NSN 7035-00-753-0695
NSN 4140-00-944-7318
NSN 5905-01-617-2528
NSN 5985-01-384-3847
NSN 5990-01-364-8405
NSN 5905-01-634-0595
NSN 5920-01-437-8850
NSN 5975-01-020-7131
NSN 6150-01-660-5741
NSN 5999-00-219-8270