Leica Builder M power, User Manual

Page: 51 / 233

Operation Builder 51
5.4.2 Measurement with Red Dot
Description
• When measurements are being made using the red laser EDM, the results may be
influenced by objects passing between the EDM and the intended target surface.
This occurs because red dot measurements are made to the first surface
returning sufficient energy to allow the measurement to take place. For example,
if the intended target surface is the surface of a road, but a vehicle passes
between the EDM and the target surface as MEASURE or M&R is pressed, the
measurement may be made to the side of the vehicle. The result is the distance
to the vehicle, not to the road surface.
• When a distance measurement is triggered, the EDM measures to the object
which is in the beam path at that moment. If a temporary obstruction, for