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Pistonphone 114 dB, 250 - 251.2 Hz | 42AP

Pistonphone - 114 dB, 250 - 251.2 Hz | 42AP - G.R.A.S. Sound & Vibration
Pistonphone - 114 dB, 250 - 251.2 Hz | 42AP - G.R.A.S. Sound & Vibration
Pistonphone - 114 dB, 250 - 251.2 Hz | 42AP - G.R.A.S. Sound & Vibration - image - 2
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Description

The G.R.A.S. 42AP Pistonphone is a battery-operated, precision sound source for accurate and reliable calibration of measurement microphones, sound level meters and other sound measuring equipment. Typical applications and use Reference calibration source Precision microphone calibrations Microphone comparisons P-I index measurement at 250 Hz or 251.2 Hz Calibration indepenent of atmospheric pressureand altitude

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