calibration mic

Pistonphone Sound Calibration Tool Parts Bruel Kjaer Type 4220 Untested FREESHIP

Beamex Mic 7 Instrument Calibration 24V, with Case & Instruction Leaflet

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

Beamex Mic 7 Instrument Calibration 24V

Sencore FE-14 Field Effect Meter Vintage Analog Test Equipment As Is Untested

H H Scott type 450-B Sound Level meter with case & strap UNTESTED

Acterna CLI-1750 CATV Signal Level & Leakage Meter - Untested