Trimetric projection is the most complex form of axonometric projection, where all three principal axes are scaled and oriented differently. This approach provides a more flexible and potentially more realistic representation of the object, as each axis can be independently adjusted.
However, the complexity of this projection makes it more challenging to construct and interpret accurately. Trimetric projection is less commonly used in standard technical drawings due to the difficulty in maintaining accurate measurements along all three axes.
Trimetric Drawing in AutoCAD
The AutoCAD drawing below contains three UCS orientations: left, front, and top. Use the command DDUCS to access them. You will need to use UCS/DDUCS commands to orient the coordinate system as desired. Also, use UCS; OR to place the origin to a suitable location.