Johnson-level-tool-mfg 40-6543 Manuale Utente Scaricare il pdf (Pagina 14)

Accuracy Self-check in vertical status

1. Follow the operations as shown above, and measure the distance

“H1” between the laser rotating plane and the platform surface.

2. Set the locking knob to “OFF” position, and place the instrument

in vertical position.

3. Rotate the vertical adjusting knob to center the bubble.

4. Measure the distance “H2” between the top laser beam and

the platform surface.

5. Mark E in the position that is equal to (H1-H2) under the point O.

6. Adjust the adjusting knob to make the laser beam aim at E.

7. Check the bubble to see if it is centered. If it is not yet -

instrument will need to be sent in for calibration.

30’ (10m)

7365H-English_Manuals 10/14/13 2:43 PM Page 14

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Johnson-level-tool-mfg 40-6543 Manuale Utente Pagina 14