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Noise meters HT-80A Decibel Meter Digital Sound Meter 30 – 130 dB Audio Noise Measure Device For Factories Hospitals Schools
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Decibel Meter Sound Level Reader 30-130dB(A), Hand-held Sound Noise Meter with Backlight Alarm, Digital Noise Meter Decibel Monitoring Tester Calibrated Audio Noise Volume Measuring Instrument: Amazon.com: Industrial & Scientific
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