Cirrus CR 171B Class 1 Sound Level Meter - Untested no preamplifier

Sola 01db sonometre Sound Level Meter

RION NL-52 Precision Sound Level Meter NX-42EX Certified 2029

Quest Technologies 1900 Type 1 Precision Integrating/Logging Sound Level Meter

Cirrus Research PLC. CR 110A DoseBadge Dosimeter Noise Reader Set

CIRRUS RESEARCH CR:262 DIGITAL SOUND LEVEL METER WITH CR:514 CALIBRATOR

Decibel Meter Recorder 13 Inches Sound Level Meter, Alarm,Unlimited Data Logging

3M Quest Technologies SoundPro Sound Level Meter - Calibrated and Working