REED Instruments R8090 Sound Level Calibrator

REED INSTRUMENTS R8080 SOUND LEVEL METER,DATA LOGGER

Two Reed Instruments. R8090 and R8050.

Quest Technologies Model 2700 Impulse Sound Level Meter W/Calibrator CA-12B

Reed Instruments R8090 Sound Level Calibrator For 1/2" Diameter Microphones,

Reed R8050 Sound Level Meter

Reed Instruments R8050 Type 2 Sound Level Meter