4 Getting Started in the Field
48 Trimble M3 Total Station User Guide
4.1 Setting up the tripod
C
CAUTION – The tops of the tripod ferrules are very sharp. When handling or carrying the
tripod, take care to avoid injuring yourself on the ferrules.
Note – Do not carry the instrument while it is attached to a tripod.
1. Open the tripod legs far enough for the instrument to be stable.
2. Locate the tripod directly over the station point. To check the tripod's position,
look through the center hole in the tripod head.
3. Firmly press the tripod ferrules into the ground.
4. Level the top surface of the tripod head.
5. Securely fasten the thumb screws on the tripod legs.
6. Place the instrument on the tripod head.
7. Insert the tripod mounting screw into the center hole of the base plate of the
instrument.
8. Tighten the tripod mounting screw.
4.1 Centering
When you center the instrument, you align its central axis precisely over the station
point. To center the instrument, you can either use the optical plummet or a plumb
bob. The plumb bob is sold separately.
41.1 Centering with optical plummet
Note – If you require high accuracy, check and adjust the optical plummet before you
center the instrument. For detailed instructions, see Checking and adjusting the optical
plummet, page 117.
1. After setting up the instrument on the tripod, look
through the optical plummet and align the reticle with
the station point. To do this, turn the leveling screws
until the center mark of the reticle is directly over the
image of the station point.
2. While supporting the tripod head with one hand, loosen
the tripod leg clamps and adjust the lengths of the legs
until the air bubble is in the center of the circular level.
3. Tighten the tripod leg clamps.
4. Use the plate level to level the instrument. See Leveling, page 49. Look through
the optical plummet to check that the image of the station point is still in the
center of the reticle mark.
To Next Page
Loading...
Need help?
General
