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PCE 432 Class 1 Decibel Sound Meter with GPS (22 - 136dB) — ShopenaSupply
BSWA308 Type 1 Integrating Sound Level Meter
Sper Scientific 840015 Type 1 Sound Meter, Meets IEC61672 and ANSI S1.4: Amazon.com: Industrial & Scientific
General Tools DSM403SD Digital Class 1 Sound Level Meter with Data Logging SD Card from Cole-Parmer
Class 1 Sound Level Meter Calibrator PCE-SC 09 - Walmart.com
TENMARS ST-109 Class 1 Sound Level Meter Integrating Sound Level Meter # | eBay
Sound Level Meter Class-1 (Range: 30 to 130 dB) for Industries, Vehicle Noise, Environmental Noise Along with Calibration Certificate by Lutron SL-4033SD: Amazon.com: Industrial & Scientific