Johnson-level-tool-mfg 40-6184 Manuel d'utilisateur télécharger pdf (Page 10)

8. Self-Check and Calibration

Horizontal bubble vial check

Put the laser on a smooth and horizontal plane, and then check

according to steps as follows:

Step 2 Rotate unit 180 degrees.

If the laser level is in horizontal, the bubble vial position should be as follows:

Step 1

Step 3

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Johnson-level-tool-mfg 40-6184 Manuel d'utilisateur Page 10