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5.11.2 Reference Arc
This procedure allows user define a reference arc, and the measure or stake out
with respect to the arc.
Off: Perpendicular distance from arc.
All arcs are defined in clockwise direction.
All calculations are made in two dimensions.
Steps：
1. Define the arc.
2. Decide to measure or to stake out
1): ‘Line & Offset’ measurement
2): Stake out of reference arc
a: stake-out point
b: stake-out arc
c: stake-out chord
d: stake-out central angle
5.11.2.1 Defining Reference Arc
a) Center Point & Start Point
On Page 2/3 of Programs, press F4 to
start Reference Line/Arc.
After setting the job, station and
orientation, press F4.
Press F2 to start Reference Arc.
Press F1 to choose to define the
reference arc by CenterPt & StartPt.
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