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3.3 Levelling with circular vial
Tripod is adjusted according to the following points by extending or contracting the legs so
that the bubble of the Circular vial goes to the centre of the circle.
• Shorten the leg at the side of the bubble or extend the leg opposite of the bubble to position
the bubble in the centre of the vial circle.
• All three legs are extended or contracted until the bubble is in the centre.
During this process, the foot is not placed on the tripod leg point and the position of the
tripod points do not change.
3.4 Levelling with the plate vial
- (A) Align the plate vial in parallel with a line joining any two of the levelling screws.
Then, adjust the two screws to centre the bubble in the plate vial.
- Turn two levelling screws in an opposite direction mutually in a way that the bubble moves
from the side of the plate vial to the centre.
- (B) Rotate the total station 90°.
- Use the remaining screw to centre the bubble in the plate vial.
- Rotate the instrument by 90° and 180° and confirm the position of the bubble in the plate
vial. At this time, it is not necessary to adjust it if the bubble of the plate vial is in the
vicinity of the centre.
3.5 Eyepiece adjustment
[Eyepiece adjustment]
The eyepiece adjustment is performed before target
sighting.
① Remove the telescope lens cap.
② Point the telescope at a bright object, and rotate the
eyepiece ring full counter clockwise.
③ Look through the eyepiece, and rotate the eyepiece
ring clockwise until the reticle appears at its
maximum sharpness.
Levelingscrew
Levelingscrew
(A)
(B)
Verticallines(double)
Verticalline(single)
Horizontalline
Sightaxis
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