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Model 44-40 Series

The Model 44-40 Series are shielded GM (Geiger-Mueller) detectors capable of detecting alpha, beta, or gamma radiation. Both the Model 44-40 and 44-40-2 have lead shielding. The Model 44-40 has a painted lead housing, and the Model 44-40-2 has a painted aluminum housing over the lead shielding. A lighter version, the Model 44-40-1, has tungsten shielding and a painted aluminum housing.

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