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Extech 407730: 40-to-130-Decibel Digital Sound Level Meter

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Digital Decibel Meter 30-130dBA Noise Meter Handheld Sound Level A Double Meter

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Bruel & Kjaer Charge Amplifier Type 2635

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TRIPLETT SoniChek Professional Sound Level Meter Xlnt Clean Free Ship

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Vintage Brüel & Kjær Leather Case 8.5”x2”x3.5”