Spectra Precision Survey Pro v3.80 Recon iPAQ Reference Manual - Manual (Page 179)

COGO Menu
R-173
Corner Angle
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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
6HOHFW IURP 0DS« : 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.
6ROYH : 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 .