Ludlum Model 6 Geiger Counter

The Model 6 is a gamma exposure ratemeter equipped with an internally housed, energy compensated GM detector that measures over the range of 0 to 10

Ludlum – Pacific-Tec Store

Used Ludlum Model 6 Geiger Counter for Sale in Stafford, Texas

Geiger Counter Model 6 [Engine by iGetWeb.com]

Ludlum Model 5 Geiger Counter – Pine Environmental

Portable Survey Meters

Used Ludlum Model 6 Geiger Counter for Sale in Stafford, Texas

Ludlum - Scannix

Large-screen LCD Geiger Counter Radioactivity Detector RJ33-1015 - AliExpress

Field Collecting : Geiger counter suggestions, and how to use measurements?

Geiger Counter Radiation Meter Model 107c In Case

Ludlum Model 3 Radiation Monitor (Gamma)

Ludlum Model 2

Geiger Counter Calibrations and Repair, Environmental Health & Safety