CD V-700

The CD V-700 is a Geiger counter employing a probe equipped with a Geiger–Müller tube, manufactured by several companies under contract to US federal civil defense agencies in the 1950s and 1960s. There were substantial differences between various models and manufacturers during the CD V-700's production. Many of the earlier units required the use of now-obsolete high-voltage batteries, and were themselves declared obsolete by the end of the 1970s. Later models use between two and five of the standard size D battery.

Tens of thousands of these units were distributed to US state civil defense agencies. Even though large numbers have been sold off as surplus to civilian users, many remain in use with first responders and state emergency management agencies today.

Manufacturers and models