General Tools DSM403SD Professional Class 1 Sound Level Meter + Calibrator

RION NL-06 General Sound Level Meter Tested

Bruel & Kjaer 1/2” 4189 Microphone Prepolarized Free-Field Type 2671 Preamp

LCD Damage RION NL-06 Sound Level Meter W/O Microphone

Larson Davis 800B Precision Integrating Sound Level Meter

RION NL-20 Sound Level Meter Noise Meter Used Tested Japan

3M AcoustiCal AC-300 Calibrator With SD-200 Sound level meter, Carrying Case

Quest Technologies 2400 Sound Level Meter