Sokkia im-101, Operator'S Manual, Page: 31 / 230

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7. SETTING UP THE INSTRUMENT
2. Roughly center the bubble in the circular level by either
shortening the tripod leg closest to the offcenter direction of
the bubble or by lengthening the tripod leg farthest from the
offcenter direction of the bubble. Adjust one more tripod leg
to center the bubble.
3. Power ON the instrument.

"8. POWER ON/OFF"
The electric circular level is displayed on the <Tilt>.
“
 ” indicates the bubble in circular level. The range of the
inside circle is ±4' and the range of the outside circle is ±6'.
Tilt angle values X and Y are also displayed on the screen.
• “  ” is not displayed when the tilt of the instrument exceeds
the detection range of the tilt sensor. Level the instrument
while checking the air bubbles in the circular level until “
 ”
is displayed on the screen.

• When executing the measurement program, if measurement
starts with the instrument tilted, the circular level is displayed
on the screen.
4. Using levelling foot screws, center “

” in the circular level.
First, turn the instrument until the telescope is parallel to a
line between levelling foot screws A and B. Next, set the tilt
angle to 0° using foot screws A and B for the X direction and
levelling screw C for the Y direction.
• When the bubble is in the center, proceed to step 5.
5. Loosen the centering screw slightly.
Looking through the optical plummet eyepiece, slide the
instrument over the tripod head until the survey point is
exactly centered in the reticle.
Retighten the centering screw securely.
If the instrument is levelled using laser plummet, emit the
laser plummet beam and check it again.

"7.2 Levelling PROCEDURE Centering with the laser
plummet eyepiece*1"
6. Check again to make sure the bubble in the electric circular
level is centered.
If not, repeat the procedure starting from step 4.
7. Press {ESC} to return to Observation mode.
Tripod legs
adjustment
OK
Slide the instrument
over the tripod head
Centering screw