Finished Sketch Drawn to Scale.
Outdoor areas are considered in two categories--inhabited and uninhabited, or
The reason for this separation is that inhabited areas normally have
easily defined fixed reference points and the triangulation method can be used.
Uninhabited or remote areas may not have easily defined fixed points within a
reasonable proximity. Objects or evidence will have to be located through the use
of the intersection-resection method defined in FM 21-26.
Cross-projection in sketching adds another dimension. It is useful when the items
or locations of interest are on or in the wall.
The walls and ceiling, if
appropriate, in a cross-projection sketch are drawn as though the walls had been
folded out flat on the floor.
(See Figure 1-8.) The required measurements and
triangulation of evidence are then entered on the sketch.
sketch may be used as the scaled drawing.