Larson Davis, System 824, Sound Level Meter with PRM902, AMC493B, AEC100, AEC101, CAL250, Microphone Model 2575, 2559 and GSI Test Cavities.
This Larson Davis, System 824, Sound Lever Meter and Accessories was removed from a government (military) facility and is in good working condition. The unit powers on and passes a self test with no errors. The unit responds to menu selections and appears to be fully functional.

Includes:
System 824 Sound Level Meter
AMC493B (Artificial Mastoid)
Microphone (1″ Pressure) Model 2575
Microphone (1/2″ Random Incidence) Model 2559
AEC100 (Acoustic Coupler for Supra-Aural Earphone Testing)
AEC101 (Acoustic Coupler for Extended range and Circumaural)
PRM902 (1/2″ Microphone Preamplifier)
CAL250 (Precision Acoustic Calibrator)
Grason-Stadler, 2 cc Coupler (GSI #1700-2005)
GSI Test Cavities (2000-1035)
All Certificates of Calibration and Conformance
System 824 CD (Ver. 4.283, 824 Utility Ver. 3.12)
AMC493B Technical Reference Manual and Sensivity Data CD
AC Power Supply
Microphone Extension Cable and Computer Cords