ECOTEST DoseG Operating Manual page 125

mechanical center coincides with the dosime-
ter's mechanical center that is marked with a
"+" sign on the top cover of the dosimeter.
Note. The distance between the mechanical center
of the source and the mechanical center of the dosime-
ter's detector is considered to be the distance between
the mechanical center of the source and the plane, which
is perpendicular to the direction of gamma-quanta beam
spreading, and passes through the mechanical center of
the dosimeter in this plane. The distance between the
cover surface and the detector's center is 7.2 mm.
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