Checking the Horizontal Leveling Accuracy of the Lateral Axis
A free measuring distance of 78 ft on a firm surface in front of a wall is required for the check.
–Mount the measuring tool onto the multi- purpose attachment or a tripod, or place it on a firm and level surface at a distance of 78 ft to the wall. Switch the tool on.
Thus, the difference d between points I and II may not exceed 9/16 in (max.).
Checking the Horizontal Leveling Accuracy of the Longitudinal Axis
A free measuring distance of approximately 78 ft on a firm surface between two walls A and B is required for the check.
–Mount the tool onto the
A
78 | ft |
|
B
–Direct one of the two lateral laser beams, that run alongside the lateral axis of the tool, at the wall. Allow the tool to level in. Mark the center of the laser beam on the wall (point I).
78 ft
–Direct the horizontal laser beam against the close wall A and allow the measuring tool to level in. Mark the center of the laser beam on the wall (point I).
d
A
180˚
180˚
B
–Rotate the measuring tool by approx. 180° without changing its height. Allow it to level in and mark the center point of the other lateral laser beam on the wall (point II). Take care that point II is as vertical as possible above or below point I.
–The difference d of both marked points I and II on the wall results in the actual height deviation of the tool alongside the lateral axis.
On the measuring distance of 2 x 78 ft = 156 ft, the maximum allowable deviation is:
156 ft x ±0.0036 in/ft = ±9/16 in (.563).
–Turn the tool around by 180°, allow it to level in and mark the center point of the laser beam on the opposite wall
B (point II).
–Without turning the tool, position it close to wall B. Switch the tool on and allow it to level in.