ADA INSTRUMENTS PROF X2, Operating Manual

Page: 8 / 38

MEASUREMENT FOUNDATION
5. HOW TO USE THE INSTRUMENT
1
2
3
1. Positioning the tripod.
Place the tripod over the measuring point and set the three legs almost equidistant to it. The place of mounting should be as
level as possible. Turn the wing clamps on the legs clockwise. It will enable them to be properly extended. The pointed shoes on
the tips of the legs should pierce the surface of the ground somewhat so that the tripod is surely erected and reliable as
surveying work is being performed on it.
2. Mounting the instrument on the tripod.
Place the instrument carefully on the tripod and tighten the central screw properly.
3. Adjusting the level of the instrument.
Use the circular level and foot screws of tribrach to roughly adjust the level of the instrument and then use the tubular one to do
precision levelling.
Levelling with circular level: Turn the screws 1 and 2, as shown in figure 4A, so that the bubble moves to the central line of
the circular level, and then turn the screw 3, as shown in figure 4B, so that the bubble is exactly in the center of the level.
Fig.4A
Fig.4B
PROF
X2