Levelling With Circular Vial; Levelling With The Electronic Vial - Pentax R-2501NS Instruction Manual

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 electronic vial

[Electronic vial screen]
① If the [Laser] key is pushed, it becomes a display screen for the Electronic vial.
※R-2501NS、R-2502NS only
② It returns to the former screen by the [ESC] key.
[Levelling]
① Rotate instrument horizontally and make two Leveling screws arbitrarily chosen parallel to
the display.
② Turn on the Electronic vial function by pushing the [Laser] key.
Put the bubble of the Circular vial in the centre of the circle when the display shows "TILT
OVER".
③ Turn two Leveling screws arbitrarily chosen in an opposite direction mutually and put the
vial of the horizontal Electronic vial in the centre.
(Figure A)
④ Put the bubble of the lengthwise Electronic vial in the centre by operating the Leveling
screw of one remainder.
(Figure B)
⑤ The procedures are different according to the state of the Automatic inclination correction
as following.
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※LEVELING DISP is PLATE