34
Vertical Calibration
Perform the following check after completing "Horizontal Calibration" on the previous page.
(1)Checking
1
Set up the instrument half way between
two walls a minimum of 30m (98 ft) apart.
(The instrument can be facing either
direction X or Y. No tripod is used.)
2
Turn the power switch on.
3
Place a piece of paper on each wall (A
and B).
Mark the horizontal laser positions (Ma and Mb) on each wall using target.
4
Turn the power switch off. Position the
instrument for vertical operation (see
instruction on page 12) with the rotary
head directly facing wall A (see illustra-
tion). Make sure the unit is level by check-
ing the level vial. Use the leveling screw
to adjust if necessary.
5
Turn the power switch on. (Laser beam
should be in scanning mode.)
6
Mark where the split beam emitted from
the top of the rotary head strikes wall A
(Ha). Measure the distance (dHa)
between marks Ma and Ha.
about 15 m
(49ft)
about 15 m
(49ft)
Wall
A
Wall
B
about 30 m (98ft)
Wall
A
Wall
B
about 1m
Foot