Preparation For Measure- Ment 7. Setting Up The Instrument; Centering - Sokkia 30R Series Operator's Manual

7. SETTING UP THE INSTRUMENT
• Mount the battery in the instrument before performing this operation because
the instrument will tilt slightly if the battery is mounted after levelling.
7.1

Centering

PROCEDURE
1. Set up the tripod
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 surveying
point.
Make sure the tripod shoes are
firmly fixed in the ground.
2. Install the instrument
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.
3. Focus on the surveying point
Looking through the optical
plummet eyepiece, turn the optical
plummet eyepiece to focus on the
reticle.
Turn the optical plummet focusing
ring to focus on the surveying
point.
Centering screw
25