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6. PREPARATION FOR MEASUREMENT
Use the target or (single) prism when performing “target scanning”.
• Be sure to use the target sheets for the GLS-2000/1500 manufactured by TOPCON.
• Select the target sheet (large, medium, small) based on the distance to the object being scanned.
(Target sheet (large / medium) is sold separately)
Assembling the target
• Refer to the instruction manual of the prism in use for its assembling.
PROCEDURE
1. Attach the alignment piece of the prism adaptor
(sold separately) to the tribrach (sold separately),
according to the position shown in the figure
here.
2. Tighten the tribrach fixing lever firmly by turning
clockwise.
6.9 Preparing the Target
Distance to the
scanning target (m)
Target sheet
Size (m)
50-200
Large
0.12
10-100
Middle
0.06
2-50
Small
0.03
Prism-adapter
Alignment piece
Tribrach
Tribrach fixing lever