Leica Geosystems Leica DISTO Classic3 - Manual (Page 34)

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In daylight (outdoors) always work with laser
viewfinder. If necessary, shade the target.
Increased ranges:
At night, at dusk and when target area is in
the shade.
Reduced range:
The range of the DISTO can be reduced by
matt, green and blue surfaces (also by trees
or plants)
User Information
When aiming through panes of
glass, or if there are several
objects in the line of sight,
erroneous measurements can
occur.
Range
On a rough surface (e.g. coarse plaster) a
mean value is indicated.
To avoid measuring to the bottom of plaster
joints:
Use target plate, 3M "Post-it" or board.
Rough Surfaces