QEO GFE 32 Mode D'emploi page 13

EN
CHECK OF THE CIRCULAR LEVEL
The user is expected to carry out periodic checks of the instrument's accuracy.
Set up the instrument and level it in horizontal direction. Rotate the instrument exactly by 180° and
check if the bubble of the circular level is still centered.
ADJUST THE CIRCULAR LEVEL
If the bubble of the circular level is not centered the
level must be adjusted. Remove half of the deviation
by means of the footscrews and half of the deviation
with the adjusting pin of the tool kit.
C
OPERATION
SET UP THE INSTRUMENT
Set up a tripod as upright as possible and take care of good stability.
Position the level carefully on the tripod and fix it with the retaining bolt of the tripod.
Use the footscrews to center the bubble of the circular level. Rotate the instrument by 180° and re-
check if the bubble is still centered. If necessary adjust it again. Optimum precision can only be achie-
ved if the bubble is perfectly level.
1. Center the bubble with two foot screws – see pic. 1.
2. Center the bubble with the third foot screw – see pic. 2.
13