Turn the instrument approximately 90°. Adjust screw C,
till the bubble in the center of the level.
Repeat above steps until the bubble remains in the center of the spherical level while the instrument
is rotated to any position.
3. Accurate leveling-up with electronical level
Press and hold [ ] to power on the instrument. Enter in Cube-a -> Calibrate -> Tilt Compensator
to access to the electronical bubble page.
Use the tribrach leveling screws to level up the instrument, taking the electronical level on the screen
as reference. Adjust the screws to make the bubble, visible on the screen, in the center of the
electronical level, as visible in the image below.
If sperichal level is not centered when leveling up with electronical bubble, probably it’s necessary
to calibrate it (see 6 Calibration).
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