Nuclear Measurements Corporation
Model GS-3

Nuclear Measurements Corp.
Model GS-3
The meter reads 0 - 500 CPS
Switch selectable scales of  x1 / x10 / x100

This unit uses Two 1½ Volt "D" batteries and Three 45 Volt "B" batteries.
The box shows a postmark of  December 20, 1955.

Left and Right SideViews

Parts List and Schematic
Note: The Civil Defense version is listed as a GS-3CD

Close-up of meter and booklets published by the U.S. Government

Inside view of the electronics.

View of probe with beta shield open and the Geiger-Mueller tube.
Probe is 7 inches long.
This is a glass tube, and is 5¼ inches long.
The tube has the number RCL 5-55 on it.

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