Bosch GCL100-40G Operating/Safety Instructions Manual page 15

the actual height deviation of the
measuring tool.
The maximum permitted deviation on the
measuring distance of 2 × 5 m = 10 m is as
follows:
32 ft x ±0.0036 in/ft = ±1/8 (0.115 in)
(10 m × ±0.3 mm/m = ±3 mm)
The discrepancy d between points
must therefore amount to no more than 3
mm.
Checking the Level Accuracy
of the Horizontal Line
For this check, you will need a free area of
16 x 16 ft (5 x 5 m).
– Mount the measuring tool in the middle
between walls A and B on a tripod, or
place it on a firm, level surface. Switch on
the measuring tool and select horizontal
operation. Allow the measuring tool to
level in.
A
– At a distance of 8 ft (2.5 m) from the
measuring tool, mark the center of the
laser line on both walls (point
II
and point on wall B).
A
I
and
B
I
on wall A
B
– Set up the measuring tool at a 16 ft (5 m)
distance and rotated by 180° and allow it
to level in.
– Align the height of the measuring tool
(using the tripod or by placing objects
underneath as required) so that the
center of the laser line exactly hits the
previously marked point
III
– Mark the center of the laser line on wall
A as point
I
point ).
– The discrepancy d between the two
marked points
the actual horizontal deviation of the
measuring tool.
The maximum permitted deviation on the
measuring distance of 2 × 5 m = 10 m is as
follows:
32 ft x ± 0.0036 in/ft = 1/8 in (0.115 in) (10
m x ±0.3 mm/m = ± 3 mm)
The discrepancy d between points
must therefore amount to no more than 3
mm.
Checking the Level Accuracy
of the Vertical Line
For this check, you will need a door opening
(on solid ground) which has at least 8 ft
(2.5 m) of space either side of the door.
– Place the measuring tool 8 ft (2.5 m)
away from the door opening on a firm,
flat surface (not on a tripod). Switch on
the measuring tool and select vertical
operation. Aim the laser line at the door
opening and allow the measuring tool to
level in.
– Mark the center of the vertical laser line
on the floor of the door opening (point
-15-
II
on wall B.
III
(vertically above or below
I III
and on wall A reveals
I III
and