Bruel&Kjaer AO-0028 Microphone Extension Cable 10 meters

Decibel Sound Level Meter Fahrenheit Temperature Time Humidity Color LED Display

Bruel & Kjaer 2610 Measuring Amplifier NO POWER CORD UNTESTED

Larson Davis Model 2900 Dual Channel Time Analyzer Precision Sound Level Meter

GenRad General Radio 1565-A Sound Level Meter w/ Leather Case – Untested Vintage

General Radio Sound-Level Calibrator Type 1562-A w/ Case (Parts, UNTESTED)

Douk Audio VU9 Dual Pixie Tube Sound Level Meter MIC+LINE Audio Display Analyzer

RION NA-29E Precision Sound Level Meter Octave Band Analyzer