Spectra Precision Survey Pro v4.5 Recon and Nomad Reference Manual - Manual (Page 353)

Inverse Menu
R-345
Inverse Point to Line
Inverse Point to Line .
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.
Point / Direction : 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.
Solve : 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 Inverse 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.
Azimuth (pt to line): is the azimuth of the offset from the Inverse
point toward the specified line.