General Radio Null Detector Model Type 707A

Manufacturer: General Radio

Model Number: Type 707A

Serial #: 338

Equipment Description: Null Detector

Label Write-up:
Cathode Ray Null Detector. This is a basic oscilloscope used for balancing an impedance bridge. It indicates the effect of adjusting the reactive and resistive balancing controls of the bridge. The display is visual. Frequencies between 25 cycles and 20 kilocycles. Rack mounted.

Dates Produced: 1942

Original Price: $195

The museum's inventory number: MRT-1203

Located at Museum in: Test Equipment Room