Brüel & Kjaer Sound Calibrator model 4231 specifications
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[[File:|thumb|Brüel & Kjaer Sound Calibrator]]
Description
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Accessories
- Bruël & Kjaer model 4950 Free Field microphone
- Bruël & Kjaer model 7013 Pressure Field microphone
- Brüel & Kjaer model 4153 Artificial Ear model