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Koolertron Portable Professional Digital Sound Pressure Level Meter 30 ~ 130 dB---USB Noise Measurement With SD Memory Card : Koolertron.com
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Portable GM1356 Digital Sound Level Meter 30~130 dB Decibel Noise Measurement Tester for Indoor/Outdoor Uses by Tekit - Multi Testers - Amazon.com
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SLM25TK Sound Level Meter with Data Logging Function Measure 30dB~130dB and CD Software - Tekcoplus Ltd.
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