Spectra Precision Survey Pro CE v3.6 User Manual - Manual (Page 312)

Inverse Menu
R-155
Grade : is the slope from the Begin Point to the End Point .
Inverse Point to Line
,QYHUVH 3RLQW WR /LQH 
The Inverse Point to Line screen computes the perpendicular offset
distance and direction from a known point to a continuous line
defined by two points or one point and a direction.
Inverse Point : is the known point that the offset
information to a specified line is computed.
Begin Station : is the beginning station value
that corresponds with the Start of Line , which is
used to compute the inverse station in the
results.
Start of Line : is the first point that defines the
line from which the offset is computed.
3RLQW / 'LUHFWLRQ : is the second point or
known direction that defines the line from which
the offset is computed.
;
Store Point : When checked, will store the coordinates for the point
located on the specified line, tangent to the offset.
6ROYH : will compute the distance and direction of the offset from the
known point perpendicular to the specified line.
Results
Inv. Station : is the station on the specified line where the
perpendicular offset occurs, starting from the Begin Station .
Offset : is the horizontal distance of the perpendicular offset between
the I nverse point and specified line.
Offset is : indicates if the Inverse point is located to the Right , Left , or
on the specified line as you occupy Point 1 and face the second point or
direction of the line.