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3 PREPARATION FOR SURVEYING
3-4 Leveling 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 center 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 center of the vial circle.
● All three legs are extended or contracted until the bubble is in the center.
During this process, the foot is not placed on the tripod leg point and the
position of the tripod points do not change.
3-5 Leveling with Electronic vial
[Electronic vial screen]
1. If the Laser key is pushed, it becomes a
display screen for the Electronic vial.
2. It returns to the former screen by the [ESC]
key.
● When R-300 instrument is seen at the position of “Left circle position”, the
screen in the electronic vial shows the correct movement direction. Please
note that the movement of the electronic vial is in the opposite direction when
the observing in “Right circle position”.
● When instrument is within the tilt compensation range, length and
sidewise±3’, “ON” is displayed at the right screen, “OVER” is displayed beyond
the limits of range and “NIL” is displayed at no compensation setting.
● With command No “520” or “Initial setting 2”, when the [TILT DISP] is selected
as ON, the [F1-TILT] of the vial screen becomes effective. The Vial tilt value is
indicated when pushing the [TILT] key. With “TILT DISP.UNIT”