Spectra Precision Survey Pro v3.80 Recon iPAQ Reference Manual - Manual (Page 175)

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Intersection
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The Intersection screen computes, and optionally stores, the
coordinates for the intersection of two lines, where the lines are
tangent to existing points. Each line is independently defined by a
known direction or a known length. (See illustration below.)
Point 1 Point 2
Direction - Direction
Intersection
Point 2
Point 1
Direction - Distance
Intersection
Point 2
Point 1
Distance - Distance
Intersection
Point 1 : is an existing point that is tangent to the first
line.
Point 2 : is an existing point that is tangent to the
second line.
'LVWDQFH / $]P RU %UJ : is the length or direction,
respectively, of the specific line.
; Store point : When checked, is the point name used
when storing the intersection(s) of the two lines. If two
intersections occur, the second solution is stored using
the next consecutive point name.
6ROYH : will compute the intersecting point, optionally
store the point and display the information in the Map
view.