Sokkia SRX1 Operator's Manual page 162

25. TARGET SYSTEM
● 360° Prism (ATP1)
This column-shaped prism reduces the possibility
of "losing" the prism during Auto Tracking
measurement.
2-point target (2RT500-K)
This target is used for two-distance offset
measurement.
Prism constant: 0
● Instrument height adaptor (AP41)
This device is used to adjust the height of the
target.
• The height of the AP41 instrument height
adaptor can be adjusted using two fixing screws.
When used with the SRX, make sure that the
instrument height "245" (mm) is displayed in the
instrument height adjustment window.
• Loosen the screws
counterclockwise .
Move the part up or down until the desired
instrument height is displayed in the adjustment
window , then rotate SRX clockwise and
tighten the screws
• Adjust the level of the AP41 instrument height
adaptor following the checking and adjustment
methods of plate level.

"23.1 Plate Level"
• Adjust the optical plummet of the AP41
instrument height adaptor following the checking
and adjustment methods of optical plummet.

•
"23.7 Optical Plummet"
154
and rotate SRX
.