Spectra Precision Survey Pro v3.80 Recon iPAQ Reference Manual - Manual (Page 167)

Inverse Menu
R-161
Inverse Point to Line
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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.
Azimuth (pt to line) : is the azimuth of the offset from the Inverse point
toward the specified line.