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12. EXPLANATION
Sighting can be more accurately performed by facing the 360° Prism toward the total station.
When using the ATP1, the 360° Prism should be set up so that a pair of diametrically-opposed
hexagonal points on its rubber flanges are aligned with the sighting direction of the total station (see
the diagram below).
When using the ATP1S, the 360° Prism should be set up so that a pair of diametrically-opposed marks
on top of the prism are aligned with the sighting direction of the total station.
12.1
High Accuracy with the 360° Prism
: Hexagonal points
Prism sighting direction