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9.3
9.3
9.3
9.3 Plane
Plane
Plane
Plane Offset
Offset
Offset
Offset Measurement
Measurement
Measurement
Measurement
Sometimes we wish to obtain the coordinate of some points
where we cannot measure directly distance. Fortunately, we can
measure the distances of another points, and all these points are
in a plane. At this time the plane offset measurement can be
used. The figure is shown as follow:
P0
P3
(
prism
)
P2
(
prism
)
P1,P2,P3are the points where distance
can obtain,the height should be setting
to
O.P0
is
the
point
that
need
measuring.
station
P1
(
prism
)