Makita SK102 Instruction Manual page 18

Checking the accuracy of the
Makita SK102
Check the accuracy of your Makita SK102
regularly and particularly before important leveling
jobs.
Checking the accuracy of the leveling
Refer to drawing {J + K}.
Set the instrument on a stand halfway between two
walls (A+B) that are approx. 5 m apart.
Set the Lock switch {B, 3} to the "Unlocked" (
position.
Point the instrument to wall A and switch the instru-
ment on with the Laser ON {B, 1} key . Activate the
laser crosshairs with the Laser ON {B, 1} key and
mark the point of intersection of the laser crosshairs
on the wall A (-> A1).
Rotate the instrument by 180° and mark the point of
intersection of the laser crosshairs on wall B (-> B1).
Then place the instrument at the same elevation as
close as possible to wall A and again mark the point
of intersection of the laser crosshairs on wall A (->
A2). Rotate the instrument by 180° again and mark
the point of intersection of the laser crosshairs on
wall B (-> B1). Measure the distances of the marked
points A1-A2 and B1-B2. Calculate the difference of
the two measurements. If the difference does not
exceed 2 mm, then the Makita SK102 is within the
range of tolerance.
| (A1 - A2) - (B1 - B2) | ≤ 2 mm
Makita SK102
Checking the accuracy of the horizontal line
Refer to drawing {L}.
Place the Lock switch {B, 3} in the "Unlocked" (
position.
Position the instrument approx. 5 m away from the
wall. Point the instrument at the wall and switch the
instrument on with the Laser ON {B, 1} key . Activate
both laser lines with the Laser ON {B, 1} key and
mark the point of intersection of the laser crosshairs
on the wall.
Swivel the instrument to the right and then to the
left. Observe the vertical deviation of the horizontal
)
line from the marking. If the deviation does not
exceed 3 mm, then the Makita SK102 is within the
range of tolerance.
Checking the accuracy of the vertical line:
Refer to drawing {M}.
Place the Lock switch {B, 3} in the "Unlocked" (
position.
As reference, use a plumb bob and mount it as close
as possible to an approx. 3 m high wall.
Position the instrument at a distance of approx.
1.5 m from the wall at an elevation of approx. 1.5 m.
Point the instrument at the wall and switch the
instrument on with the Laser ON {B, 1} key . Activate
the vertical laser line with the laser ON {B, 1} key.
Swivel the instrument until the vertical laser line is
slightly above the ground on the plumb-bob. Now
determine the maximum deviation of the laser line to
the plumb bob over the entire length of the line.
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