3M 3.9" X 2.3" X 1.8" AcoustiCal 114 dB Type 1 Sound Calibrator With 9 Volt Alkaline Battery Long Last Comfort Letter height: 6-inches

Letter height: 6-inches

- Meets ANSI Z87+ high impact

Limits downward (flexion) wrist movements

- Anodized Aluminum Body

3M 3.9" X 2.3" X 1.8" AcoustiCal 114 dB Type 1 Sound Calibrator With 9 Volt Alkaline Battery Long Last Comfort Letter height: 6-inches*** 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