
-14-
Repeat the measuring procedure for
the Y-axis. Position the Y-axis to aim
to a wall or target plate.
165-ft (50 m)
H1
Y1
165-ft (50 m)
H1
H2
Y2
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
B
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
H2
B
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
D
H3
H2
B
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
H2
B
D
180°
165-ft (50 m)
H1
X1
165-ft (50 m)
H1
H2
X2
D
180°
180°
180°
180°
10°
45°
90°
RPM
4250HV
– After the leveling, mark the center
of the laser beam on wall (point
H1
).
– Rotate the instrument by 180°,
allow it to level in and mark the
center point of the laser beam on
the wall (point
H2
).
165-ft (50 m)
H1
Y1
165-ft (50 m)
H1
H2
Y2
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
B
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
H2
B
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
D
H3
H2
B
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
H2
B
D
180°
165-ft (50 m)
H1
X1
165-ft (50 m)
H1
H2
X2
D
180°
180°
180°
180°
10°
45°
90°
RPM
4250HV
– The difference
D
of both marked
points
H1
and
H2
on wall is the
actual deviation of the instrument
for the measured axis.
The value of
D
(deviation) in either
axis should be less than 5/16-in
(8mm).
If the instrument should exceed
the maximum deviation in anyone
of the measuring procedures, have
it checked at a SitePro after-sales
service agent.
Checking the Vertical Alignment
(4200HV Only)
A free measuring distance of 100-ft
(30m) on a firm surface between two
walls or targets
A
and
B
is required
for the check.
Place the laser instrument in the
laydown position on a flat, level
surface.
– Mount the instrument in the
vertical position onto a tripod using
mount accessory or place it on a
firm and level surface near wall.
– Switch the instrument on. Position
the up beam to aim at wall
A
or
target plate.
165-ft (50 m)
H1
Y1
165-ft (50 m)
H1
H2
Y2
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
B
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
H2
B
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
D
H3
H2
B
100-ft (30 m)
1.5-ft
(0.5 m)
A
H1
H2
B
D
180°
165-ft (50 m)
H1
X1
165-ft (50 m)
H1
H2
X2
D
180°
180°
180°
180°
10°
45°
90°
RPM
4250HV
– After the leveling, mark the center of
the laser beam on wall
A
(point
H1
).
– Rotate the instrument by 180°
(without changing the height),