(7) Sketched by.
(8) Verified by.
TRIANGULATION METHOD:
a. The triangulation method is used by military police and USACIDC.
In the
triangulation method, objects are located and depicted by creating a triangle of
measurements from a single, specific identifiable point of the object to be fixed
to two fixed points, on the same plane (level), at the scene. Where appropriate,
each object is fixed by two separate triangles related to opposite points on the
same object.
b. Triangulation - regular shape items.
Regular shape items are fixed by
creating a minimum of two separate triangles of measurements. Each triangle must
originate at opposite specific identifiable points of the object and terminate at
two fixed points, on the same plane (level), at the scene. This is commonly known
as the "2-V" method of triangulation.
c. Triangulation - pliable items.
Pliable (flexible) objects are fixed by
creating a single triangle of measurements from the center of mass of the object
and terminating at two fixed points, on the same plane (level), at the scene, and
measuring the longest overall dimension (pattern size) of the object.
d. Triangulation - rules.
In the interest of evidence integrity and accuracy,
the following general rules apply in triangulating evidence and other important
items.
(1) Triangulate from the object (without moving or touching it) to the fixed
points, if possible.
(2) Triangulation measurements must originate and terminate on the same plane
(level). The words "top" and "base" are key terms in the notes. Take measurements
along a flat, level plane at ground or floor level when possible.
(3) Do not triangulate under or through other evidence.
(4) Do not triangulate evidence to other evidence that has been fixed.
STEP 9.
BEGIN DRAWING ROUGH EVIDENCE SKETCH SHOWING PLACEMENT OF EVIDENCE AND
CITING MEASUREMENTS AND TRIANGULATION OF EVIDENCE:
a.
Measure, accurately, the room, walls, entrance/exit way, door, window,
and furniture.
b.
Using the appropriate means, "fix" both regularly-shaped items and
pliable items of evidence.
2-25
MP0018
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