Johnson 1455-0000 Manuel D'instructions page 6

3. Press the On/Off button once, the - - - - symbol on the LCD will begin
to flash as shown in picture 2.
4. The LCD will display - - 2 - - (see picture 3).
5. Rotate the digital level 180° horizontally so the LCD is now facing away
from the operator face up in the same location as it was before (see
picture 4). Press the On/Off button again. The - - 2 - - symbol will
flash. When the - - 2 - - symbol stops flashing, the digital level is
calibrated.
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Pic. 2
©2014 Johnson Level & Tool - Rev. 1
Pic. 3
Pic. 4