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User defined on-grade level:
Any arbitrary level within
30mm above or below the marking notch can be used as
on-grade level. The user defined on-grade level is set by
pressing the accuracy key for two seconds while in beam or while a
captured height level is displayed. The actual height will be used as
on-grade level and the offset on-grade symbol
blinks.
When the accuracy key is pressed for two seconds while out of
beam, the on-grade level is reset to default.
Calibration Mode:
Pressing the power and accuracy
keys together when the unit is off enables entry into a
laser calibration accuracy mode. This accuracy is
designed to be used when calibrating a laser. It is not
recommended for field use.
Calibration mode will be confirmed on the LCD by the accuracy
indicators without the on-grade bar.
Press the accuracy key or cycle power to exit the calibration mode.