General Radio Permissible Sound-Level Calibrator Type 1562-A w/ Case

GENERAL RADIO SOUND LEVEL CALIBRATOR 1562-A Unknown Condition

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

General Radio Permissible Sound Level Calibrator

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

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

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