Lasermark LMH Instruction Manual - page 11
LMH Series Rotary Lasers • 11
Method 2
Method 1
"Y" Axis
B
A
Beam from
Pivot Point = 2.2"
3.4 Grade Mode: Single Axis Grade (LMH-GR and LMH600 Only)
The single grade function is ideal for general site grading, checking
excavations, landscaping and drainage,
and more.
Manual grade mode can be activated by
placing the automatic leveling sensor in
the OFF position. Pressing the manual
grade button will deactivate the sensor.
The selected grade can be as
much as a positive or negative
10%, and set in reference to the
Y-axis of the unit.
Operator can use one of two
methods to generate single-axis
grade (Fig. 4). Method 1: Place
the unit in the middle of the two
points (A and B) to get a higher distance. Method 2: Place the unit at
one point (A) and locate the other point (B).
On the LMH600, you may fi rst press Variable Rotation button and set
the laser to the desired rotation speed. Press the "MANUAL GRADE"
button to activate Manual Grade Option. Press the ARROW buttons
(Fig. 5B) to adjust to your desired grade.
Y-Axis
Fig. 4
LMH-GR
LMH600
For greater accuracy in grade applica-
tions, precisely level the laser level
before entering into GRADE MODE.
NOTE: The total percent grade possible is from a
perfectly level base position. If the unit is mount-
ed on a tripod head which is not perfectly level,
then the grade percentage range capable would be
reduced by the slope of the base, as this affects the
tilt range of the laser head. For maximum grade
range, ensure a level tripod head using a spirit level
before mounting your unit.
Note: For the LMH-GR and LMH600, if the unit is
bumped or moved while in Manual Grade mode,
the unit will not re-level itself.
unit will not re-level itself.