Larson Davis Precision Sound Level Acoustic Calibrator CA250 W/ Case

Larson Davis Precision Sound Level Acoustic Calibrator w/ Pelican Case

Bruel & Kjaer - Pistonphone Type 4220 - CALIBRATED

Bruel & Kjaer Barometer Pistonphone Sound Calibration Equipment 4220 Denmark

Sound Level Meter & Sound Level Calibrator, and accessories

Larson Davis Spark 706 Noise Dosimeter CAL150 Calibrator Mic Cables Case Tested

B&K Precision CAL73 - Sound Level Calibrator (94dB, 1KHz Sine Wave)

Larson Davis 800B Precision Integrating Sound Level Meter