• Mount the battery in the instrument before performing this operation because the instrument will tilt slightly if the battery is mounted after levelling.
8.1 Centering
PROCEDURE Centering with the optical plummet eyepiece
1. Make sure the legs are spaced at equal intervals and the head is approximately level.
Set the tripod so that the head is positioned over the survey point.
Make sure the tripod shoes are firmly fixed in the
ground.
2. Place the instrument on the tripod head.
Supporting it with one hand, tighten the centering screw on the bottom of the unit to make sure it is secured to the tripod.
Centering screw
3. Looking through the optical plummet eyepiece, turn the optical plummet eyepiece to focus on the reticle.
Turn the optical plummet focussing ring to focus on the survey point.