Johnson-level-tool-mfg 40-6656 Uživatelský manuál stáhnout pdf (Strana 11)

5. Measure the distance ‘e’ from Dot ‘M’ to the laser line, as per

the Figure.

6. If ‘e’ > 1.5mm, the instrument is out of tolerance and must be

calibrated.

Horizontal Accuracy Self-Check (Longitudinal)

1. Set up two survey-staffs, OR use two walls, both 5 Meters

from each other (or further).

2. Set the instrument on a level tripod, and center between the

two survey staffs/walls.

3. Power on all laser lines, and move the laser until the cross dot

projects on staff/wall A. Make a mark and label as ‘A1’.

4. Rotate the instrument 180° and make the cross dot project on

staff/wall B. Make a mark and label as ‘B1’.

7048H_Manuals 6/19/13 10:53 AM Page 11

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Johnson-level-tool-mfg 40-6656 Uživatelský manuál Strana 11