Critical application
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 5985-01-406-2844
NSN 5996-00-218-1123
NSN 6150-01-497-3435
NSN 6145-00-521-0001
NSN 6145-01-334-0646
NSN 5998-01-468-7517
NSN 6105-01-200-8131
NSN 6645-01-633-1852
NSN 5835-00-978-4473
NSN 6110-01-565-2090
NSN 5990-01-599-7106
NSN 6645-01-394-7544