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The lower cover (2) of the body (Figure 1.3) contains the battery compartment
(10) with two galvanic cells installed and a Geiger-Mueller BETA-2-1 counter (11)
sensitive to alpha, beta and gamma radiation. The counter is fastened to the lower
cover and closed from the inside of the body with a plastic holder, which is fixed
with six screws. From the outside, the detector is closed with one of the covers (13),
(14), (15) or (16). The battery compartment is closed with cover (12), which is fixed
with the original screw. The polarity signs are inscribed on the bottom of the battery
compartment for proper insertion of batteries.
A stacking bag (6) is used for convenient use of the radiometer (Figure 1.1).
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