Calibrator Adaptor for use with 1″ calibrator or pistonphone for calibrating the Outdoor Microphone Nor1210 A and Nor1210 C.

Please note that the Nor1210 C version with serial numbers higher than 15177 should use Calibrator Adaptor Nor1482.

It is recommended to use calibrator Nor1253/250Hz-124dB for calibration, since this calibrator is less sensitive to changes in load volume compared to a pistonphone or a traditional calibrator.