G.R.A.S. Microphone Calibrators
Sound calibrator or pistonphone design
- 114 dB at 1 kHz; 114 dB at 250 Hz or 134 dB at 250 Hz calibration levels
- Available with built in barometric pressure and
- temperature correctionClass 0 and Class 1 calibration compliance
- Adapters for 1”, ½” and ¼” microphones
G.R.A.S. calibrators provide a traceable daily calibration reference for your acoustic measurement system.
GRAS 42AG Multifunction Sound Calibrator
GRAS 42AP Intelligent Pistophone
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