David writes – “This site provides step-by-step instructions on modifying a Civil Defense CD V-700 Geiger counter into a unit with digital readout compatible with Geiger tubes and scintillation probes.” – Link.

Related:

• Geiger counter (analog) CPU meter – Link.
• Tablet PC Geiger counter – Link.
• Geiger Countering on planes – Link.
• The GeigerPod – Link.