Johnson-level-tool-mfg 40-6656 Manual do Utilizador descarregar pdf (Página 10)

8. Self-Check & Fine Calibration

IMPORTANT: It is the responsibility of the user to verify the

calibration of the instrument before each use.

Horizontal Line Accuracy Self-Check (Transversely)

1. Set the instrument on a tripod and place approximately 5

Meters from a wall.

2. Unlock the unit and power the unit on.

3. Face the cross-line laser line to the wall, and set the center as

Dot ‘A’. Make a mark on the wall for Dot ‘A’. Make another

mark on the wall 2.5 Meters from Dot ‘A’ and mark on the wall

as Dot ‘M’.

4. Rotate the instrument 90° and make a mark on the wall 5

Meters from Dot ‘A’. Label this mark as Dot ‘B’.

7048H_Manuals 6/19/13 10:53 AM Page 10

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Johnson-level-tool-mfg 40-6656 Manual do Utilizador Página 10