24 Jul GenRad 1632-A Inductance Bridge + 1311-A Audio Oscillator + 1232-A Null Det.
Null Detector powers up. • Type 1632-A Inductance Bridge (Serial #1138) – The main precision Owen bridge. • Type 1311-A Audio Oscillator – Stable, low-distortion audio frequency source with stepped frequencies (including 1 kHz)....