Can be measured with the laser:
Requirement: There is enough area on the
target surface for the laser spot.
Attach the viewfinder, and check it is
engaged by applying pressure from the side.
Setting the telescopic viewfinder
Keep pressed, laser on continously
(
).
Set up indoors, 5m, 10m or 30m from a wall.
Turn eyepiece slowly until crosshair and
laser spot are sharply focused.
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