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 5985-00-810-5563
NSN 5950-01-065-0491
NSN 7035-01-091-7481
NSN 5990-01-102-5699
NSN 5935-01-421-4418
NSN 5998-01-588-8660
NSN 5920-01-177-9200
NSN 6150-01-411-4744
NSN 5999-00-645-8875
NSN 6130-01-052-2937
NSN 5855-00-237-4088
NSN 5930-01-143-6278