# Functions

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In CenterFind mode, the measuring tool automatically attempts to align the laser beam to the centre line of the laser receiver by moving the rotation head up and down. The laser beam can be aligned to the X‑axis or the Y‑axis of the measuring tool.

CenterFind mode is started at the laser receiver.

see CenterFind Mode

During the search, the CenterFind symbol for one or both axes will appear on the display of the measuring tool and the status indicator (12) will flash red.

If the laser beam could be aligned to the centre line of the laser receiver, CenterFind mode will automatically end and the slope found will be indicated on the start screen.

If the laser beam could not be aligned with the centre line of the laser receiver, the rotation of the laser beam is stopped and an error message appears in the display.

1. Press any button to close the error message.
2. The corresponding axis is levelled in again to 0 %.
3. Check whether the measuring tool and laser receiver have been set up correctly, and restart the mode.

The laser receiver must be situated within the pivoting range of ±8.5 % of the measuring tool.

When using CenterFind mode, the setting of both axes can change, even if one of the axes has not been aligned with the laser receiver.

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In CenterLock mode, the measuring tool automatically attempts to align the laser beam to the centre line of the laser receiver by moving the rotation head up and down. In contrast to CenterFind mode, the position of the laser receiver is continuously checked and the slope of the measuring tool is automatically adjusted. The slope measurements are not shown on the display.

- When working with CenterLock mode, ensure that the measuring tool and laser receiver are not moved unintentionally. The automatic adjustment of the slope with every change in position can lead to incorrect measurements.

The laser beam can be aligned to the X‑axis or the Y‑axis of the measuring tool.

CenterLock mode is started and finished at the laser receiver.

see CenterLock Mode (LR 65 G)

During the search, the CenterFind symbol for one or both axes will appear on the display of the measuring tool and the status indicator (12) will flash red.

If the laser beam could be aligned to the centre line of the laser receiver, the CenterLock symbol for one or both axes will appear on the start screen. The slope measurements are not shown.

If the laser beam could not be aligned with the centre line of the laser receiver, the rotation of the laser beam is stopped and an error message appears in the display.

1. Press any button to close the error message.
2. The corresponding axis is levelled in again to 0 %.
3. Check whether the measuring tool and laser receiver have been set up correctly, and restart the mode.

The laser receiver must be situated within the pivoting range of ±8.5 % of the measuring tool.

When using CenterLock mode, the setting of both axes can change, even if one of the axes has not been aligned with the laser receiver.

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In rotational operation, the variable laser beam (8) can be switched off for one or more quadrants of the rotational plane. This makes it possible to limit the risk related to laser beams to certain areas. Interference from the laser beam that affects other tools or interference with the laser receiver by unintended reflections can also be avoided.

The switching off of individual quadrants can only be controlled by using the Bosch Levelling Remote App. The quadrants in which the laser beam is visible can be seen in the laser operating mode indicator (b) on the start screen.