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pistonphone
pistonphone
4228

Pistonphone 4228 provides accurate and quick calibration for various sound measuring equipment, such as sound level meters. In addition to this, the manufacturer has included a barometer, which is compatible with the ...

pistonphone
pistonphone
250 Hz, 114 dB | SC-3120A

The SC-3120A is a pistonphone type precision sound source for use in calibration of measurement microphones. It can accomodate both 1 inch and 1/2 inch microphones. * Enables calibration to within ± 0.3dB. ...

pistonphone
pistonphone
114 dB, 250 Hz, class 1 | 42AA

The G.R.A.S. Pistonphone 42AA 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 ...

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G.R.A.S. Sound & Vibration
pistonphone
pistonphone
134 dB, 250 Hz | 42AC

The G.R.A.S. 42AC Pistonphone, high pressure is a precision sound source for calibrating microphones. It is battery operated and produces a constant sound pressure level of 134 dB re. 20µPa (equivalent to 100 Pa) ...

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G.R.A.S. Sound & Vibration
pistonphone
pistonphone
114 dB, 250 - 251.2 Hz | 42AP

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 ...

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G.R.A.S. Sound & Vibration
pistonphone
pistonphone
NC-72A

Standard sound source that generates a constant sound pressure of 114 dB at 250 Hz.