Trimble M3 Total Station User Manual

Trimble M3 Total Station User Guide 49
Getting Started in the Field 4
5. If the station point is off center, do one of the following:
– If the station point is slightly off center, loosen the tripod mounting screw
and then center the instrument on the tripod. Use only direct movement to
center the instrument. Do not rotate it.
When the instrument is centered, tighten the mounting screw.
– If the displacement of the station point is major, repeat this procedure from
Step 2.
4.1 Leveling
When you level the instrument, you make the vertical
axis of the instrument exactly vertical.
To level the instrument, use the plate level.
1. Loosen the upper plate clamp.
2. Rotate the alidade until the plate level is parallel
with any two of the leveling screws (B and C).
3. Use leveling screws B and C to move the bubble
into the center of the level.
4. Rotate the alidade approximately 90°.
5. Use leveling screw A to move the bubble into the
center of the level.
6. Repeat Step 1 through Step 5 to center the bubble
in both positions.
7. Rotate the alidade 180°.
8. If the bubble in the plate level remains centered, the instrument is level. If the
bubble moves off center, adjust the plate level. For detailed instructions, see
Checking and adjusting the plate level, page 116.

Trimble M3 Total Station Specifications

General

Brand	Trimble
Model	M3 Total Station
Category	Measuring Instruments
Language	English