Description

The Ludlum Model 3 radiation monitor is supplied with the Model 44-2 scintillator probe. The front-panel controls include a rotary switch for selecting the four-decade range, instrument shut-off, and battery test, an audio on/off switch, a fast/slow response switch, and a count reset button. This unit is most generally used for “N.O.R.M.” (Naturally Occurring Radioactive Material) survey studies.