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Extech Sound Level Calibrator For Q3400 & Q337 and microphone widths 0.5 inch or 1.0 inch
94dB or combination 94dB/114dB, 1kHz Professional Calibrator for 0.5” or 1.0” Microphones.
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Accoustical Calibrator for Sper Scientific Sound Meter, 2 Point
The Sper Scientific Accoustical Calibrator is used to calibrate all Sper Scientific digital sound meters and any sound meter with 1" or 1/2" microphone. It features a built in battery check and includes a carry case.
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Extech 407744 Sound Level Calibrator - 94dB
This is a 1kHz Professional Sound Level Calibrator for 0.5" or 1.0" Microphones. The unit comes complete with two 9V batteries, a carrying case, and a screwdriver.
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