An aluminum box which houses the G.M. tube socket.
Geiger-Muller Tube Holder, for use with Scaler Timer.
A 2.2M? stabilizing resistor is internally wired in series with the anode connection.
Connection is through a 1m long co-axial connecting lead, terminated in a standard P.E.T. connector.
Dimensions: 58 x 33mm (diameter x depth)

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