Spectra Precision Survey Pro v4.9 - Manual (Page 191)

polyline, or alignment.
Start Station: is the station for the first node of the selected line.
Station: is the station on the line where you want to compute an offset point from.
Offset: is the offset distance that is to the left (when L is selected) or right (when R is selected) from the selected
line.
Store Pts: When checked, will store the computed offset point with the name specified in the corresponding field.
[Tap Line…]: opens a window where any polyline or alignment in the current job can be selected.
[To/From…]: opens a window where a new line can be defined by entering a range of points.
[Solve]: computes the location of the offset point and optionally stores the point.
Corner Angle
[Cogo] [Corner Angle]
The Corner Angle screen provides information on the horizontal angle created from three known points.
Backsight: is an end point of the angle to be solved.
Middle Point: is the corner point of the angle to be solved.
Foresight Point: is the other end point of the angle to be solved.
[Select from Map…]: Allows you to quickly select all of the above points from a map view. The first point tapped is
entered in the Backsight field, the second in the Middle Point field and the third point tapped is entered in the End
Point field.
[Solve]: will compute the following results that describe the angle defined by the three points provided.
Results
Angle left: is the horizontal angle created as you occupy the Middle Point, face the Backsight, and turn
counterclockwise to the Foresight Point.
Angle right: is the horizontal angle created as you occupy the Middle Point, face the Backsight, and turn clockwise to
the Foresight Point.
180 - right: is the angle that results from subtracting the angle right value from 180°.
HD to Beg.: is the horizontal distance between the Backsight and the Middle Point.
HD to End: is the horizontal distance between the Foresight Point and the Middle Point.
Compute Area
[Cogo] [Compute Area]
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