Product Manual

Inspection and Adjustment Zipp02 | 31
5 Inspection and Adjustment
5.1 Tubular Vial
Inspection 1. Fix the instrument to the tripod and roughly level up the instrument and
make the tubular vial parallel to the connecting line of two of the three
leveling screws on the base. Adjust the two leveling screws so that the
tubular vial is centered.
2. Turn the instrument 180° and check if the water bubble remains at the
center.
3. If the water bubble remains at the center, no adjustment is required;
otherwise, perform adjustment as follows.
Adjustment
1. Adjust the bubble adjusting screw
so that the bubble moves toward
tube center for half the off-center.
2. Turn the leveling screw to correct
the other half off-center so that the
bubble stays at the center.
3. Repeat the steps in "Inspection"
and "Adjustment" until the long
water level is centered when the
instrument is at any position.