GENERAL RADIO SOUND LEVEL CALIBRATOR 1562-A - AS IS

General Radio Co. 1562-A Permissible Sound Level Calibrator (114dB, 125-2000Hz)

NOS Vintage General Radio Sound-Level Calibrator 1552-B with Original Box

1983 Gen Rad General Radio Sound Level Meter Genrad Type S2A UNTESTED!! As Is

General Radio Co. 1562-A Permissible Sound Level Calibrator (114dB, 125-2000Hz)

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

GENERAL RADIO SOUND LEVEL CALIBRATOR 1562-A Unknown Condition

General Radio 1567 Sound Level Calibrator & 1983 Sound Level Measuring Set