Measuring The Distance - Laser Technology UltraLyte User Manual

T O D
IME VER ISTANCE
For Internal Use Only. Not for Distribution.

Measuring the Distance

If you use the instrument to calculate the reference
distance, make sure the reference points you've
chosen form a straight line parallel to the path of
traffic.
There are two ways to measure the distance
between the points.
One way is to stand in a spot that forms a straight
line with your two reference points—or as near to a
straight line as you can manage and still see both
points clearly. Then measure both points. The
instrument calculates the distance difference. The
difference is equal to the distance between the
points. For example:
Electronic Copy of LTI's UltraLyte User's Manual – 7
M
EASUREMENT
d1
Another way is to stand at one reference point and
measure directly to the other, like this:
Decide which method you will use and, when you
are properly positioned, follow this procedure:
th Edition June 1998
27
d2
d3
d3=d2-d1
path of traffic
d3
d3=d3
path of traffic