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Many courses have highly reflective prisms
included in key course features. These prisms
pro vide your GX rangefinder with an extremely
intense return signal, allowing it to lock onto
the prism quickly and provide instant feedback
that you have accurately ranged the intended
target. When using scan mode to range a course
feature with integral prisms, your GX range-
finder will produce an audible beep and the
lock icon will be shown in the lower left portion of the display. Prism Lock
is always activated and will automatically detect the presence of prisms
in course features when scanning at a distance of 25 yards or greater.
NOTE: Prism lock is only active when in scan mode.
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Using Prism Lock
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