User's Manual

3
D. Leveling the instrument by circular vial.
a) Rotate the foot-screw A and B to move the
bubble in the circular vial, in which case the
bubble is located on a line perpendicular to a
line running through the centers of the two
leveling screw being adjusted .
b) Rotate the foot-screw C to move the bubble
to the center of the circular vial.
E. Precisely leveling by plate vial
a)Rotate the instrument horizontally by
loosening the horizontal clamp unit and place
the plate vial parallel to the line connecting
rotating the foot-screw A and B, and then bring
the bubble to the center of the plate vial by
rotating the foot-screw A and B.
b) Rotate the instrument in 90º (100gon) around
its vertical axis and turn the remaining leveling
screw or leveling C to center the bubble once
more.
c) Repeat the steps and check whether the
bubble is correctly centered in all directions.
If the laser dot doesn’t keep the center position,
please slightly loosen the screw under the tripod
head and move the instrument (don’t rotate the
instrument) until the laser dot is on the station
point. Tighten the screw and level the instrument
again. Repeat these steps until the instrument is
precisely centered and leveled.