3M 3.9" X 2.3" X 1.8" AcoustiCal 114 dB Type 1 Sound Calibrator With 9 Volt Alkaline Battery Long Last Comfort extending the life of the

extending the life of the glove

Scrap metal handling

enhanced SuperFabric knuckle protection from bumps and scrapes

- Medium fits sizes

and are available as pads

3M 3.9" X 2.3" X 1.8" AcoustiCal 114 dB Type 1 Sound Calibrator With 9 Volt Alkaline Battery Long Last Comfort extending the life of the*** Note: This item is not returnable, non refundable, and not exchangeable. All sales are final. 3M Acoustical Type 1 Sound Calibrator is designed to use with 3M sound level meters and noise dosimeters. Calibrator with two frequency levels and one sound pressure level finds application in construction, metal processing, food and beverage manufacturing and military. It runs on a single 9V battery with a expected life of 18 hrs. It generates two