Choosing A Measurement Reference - General TS01 User Manual

To temporarily change the distance measurement unit, follow the instructions
on p. 10.
If the laser has timed out (i.e., it has been on for more than 30 seconds), or if you
have just made a measurement, you will not see a red dot on the target and there
will be no flashing icon (Callout 2 of Fig. 2) on the display. To make a distance
measurement with the laser off, you must press the
twice—once to activate the laser and once to make the measurement.
See page 20 for additional operating tips.

CHOOSING A MEASUREMENT REFERENCE

The LDM can reference its measurements from the top or bottom of the housing, or
the bottom of the extension ruler (see photo on page 8 for its location).
For most distance measurements, choosing the bottom of the housing as the
reference produces the most accurate readings. Doing so allows you to hold the
bottom of the LDM horizontally against one wall of a room, or vertically against the
floor, and send the laser beam out the top of the unit toward the opposite wall or
the ceiling.
However, for continuous distance (tracking) measurements (see p. 11), using the
top of the LDM as the reference produces the most accurate readings. In tracking
mode, you typically walk the instrument back from a wall to a distance specified on
a blueprint. In this case, what you want to measure is the distance to the wall from
the top of the unit.
The button on the front panel lets you select the bottom or top of the
housing, or the bottom of the extension ruler, as the measurement reference. The
three black icons shown in Fig. 3 below are the corresponding display indications.
When the LDM is powered off and on again, the measurement reference
automatically resets to the default: the bottom of the unit.
Fig. 3. Referencing
measurements
from the bottom (left)
and top (center)
of the LDM housing,
or the bottom of the
LDM's extension ruler (right)
MEASURE
button
ON
9