Analog Geiger Counters are useful for detecting radioactivity and performing nuclear experiments. These Geiger Counters primary indicators are an audio click and an LED blink each time a radioactive particle is detected. The Model GCA-02 has an internal Geiger-Mueller tube. The model GCA-02W has an external wand that houses a Geiger-Mueller tube (GMT-01) and provides a easy to use probe for checking radioactivity.

The GCA-02 and GCA-02W Geiger Counters have the following features:

-Headphone / Analog Meter Jack

-Digital Output -- Provides a TTL logic pulse each time a radioactive particle is detected. Used to connected to various digital adapters:

Digital Meter Adapter -- Turns our analog into a accurate digital geiger counter

Geiger Graph Software - Turn your Geiger Counter Setup into a Radiation Monitoring Station

External Power Jack

Analog Meter Geiger Counter Page

Optional Belt Clip

This page lists many adapters and nuclear accessories we offer.

Adapters for Analog Geiger Counters

Digital Meter Adapter -- Turns our analog into a accurate digital geiger counter

Geiger Graph Software - Turn your Geiger Counter Setup into a Radiation Monitoring Station

Spare External Wand

Natural Uranium -- radioactive source

Radioactive Sources -- CS-137, C0-60, Sr-90, Po-210

Analog Meter

Lead Sheets (1' x 1' x .032 thick )

USB to Serial Adapter