Bruel & Kjaer 4190 1/2" Microphone Only

Bruel & Kjaer Charge Amplifier Type 2635

Bruel&Kjaer AO-0028 Microphone Extension Cable 10 meters

Bruel & Kjaer Type 2205 Sound Level Meter 4117 Mic Vintage

Larson Davis Acoustic Coupler Kit Mic Calibrator Adapter Set w/ Inserts Lab USA

PCB - The Modal Shop 130B10 Microphone and Preamp 130P10 ICP-type. 17 mV/Pa

Bruel & Kjaer Dual Microphone Power Supply Type 5935

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