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 5990-01-493-4039
NSN 6105-01-166-1874
NSN 6220-00-214-1655
NSN 5945-00-290-1779
NSN 6135-00-973-5632
NSN 6645-00-634-9317
NSN 5855-00-337-3679
NSN 6105-01-516-9936
NSN 5925-01-330-9216
NSN 4140-01-512-8528
NSN 5960-00-931-4056
NSN 6320-00-242-3300