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RadioShack Digital Sound Level Meter 33-2055: Sound Meter Radio Shack: Amazon.com: Industrial & Scientific
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Amazon.com: Decibel Meter, Tadeto Digital Sound Level Meter Portable SPL Meter 30dB to 130dB(5 Measurement Range) Backlight LCD Display, MAX/MIN Noise Measurement, Audible and Visual Alarms,Data Hold, A/C Mode : Industrial &
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