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PCE-322A Sound Level Indicator Class II Decibel (dB) Meter with Data-Logging functionality from PCE Instruments: Amazon.com: Industrial & Scientific
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Amazon.com: TestHelper SW-525B Sound Level Meter Tester 30-130db,9.6in Screen LCD Display Wall Hanging Type Decibel Noise Measuring with Alarm (Sound Level Meter with Data Logger) : Industrial & Scientific
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