The GC/RL Geiger Counter / Radiation Detection and Data Logger Project
The hardware for this project can be divided more or less into three Sections that have to be built and assembled to form one working Geiger Counter / Radiaton logger. This section provides information on the actual hardware, ie mechanical Dimensions and some points you might find useful when actually building such a thing.

The flyport Module
The Printed Circuit Board
Counter Tubes
The completed System