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AUTENS Digital Sound Level Meter, A/C Frequency Weighting Decibel Meter with USB Data Logger 30-130dB(A/C) Range Max/Min/Data Hold, Fast/Slow Mode ect.: Amazon.com: Industrial & Scientific
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Digital Sound Level Meter, Handheld Decibel Meter 30-130 dB (A/C), High Accuracy ±1.5dB Audio Noise Volume Tester with Fast/Slow Time Weighting, Decibel Monitor Data Logger for Sound Quality Control: Amazon.com: Industrial &
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YFYIQI Accurate Sound Level Meter Noise Gauge Portable Noise Grader Voice Decibel Gauge for Machinery Vehicle Ship with Two Time Weighting F S Testing Range 30 to 130db: Amazon.com: Industrial & Scientific
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