# Oblique Projection (PowerPoint) by MikeJenny

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```									Oblique Projection

Chapter 15
Oblique Projections
• In oblique projections, the projectors are
parallel to each other but are not
perpendicular to the plane of projection
• One of the object’s principal faces is parallel to
the plane of projection
Oblique Projections
Cavalier Projection
• When the receding
lines are true length,
and the projectors
are at 45 degrees to
the plane of
projection, the
oblique drawing is
called cavalier
projection
Cabinet Projection
• When the
receding lines are
drawn to half size,
the drawing is
known as a
cabinet projection
Cavalier and Cabinet
Projection of a 1 Unit Cube
Offset Measurements
• Circles, circular arcs, and other curved
surfaces are drawn using offset measurements
Angles in Oblique Projection
• When an angle is specified in degrees in a
receding plane, convert the angle into linear
measurements to draw the angle in an oblique
drawing
Angles in Oblique Projection
• Partial circles spaced equally show symbolic
Oblique Dimensioning
• Oblique drawings are dimensioned in a similar
fashion as isometric drawings
Computer Graphics
• Using CAD, oblique drawings can be created
by using snap increments and drawing
similarly to drawing on grid paper
• If a complicated pictorial is needed however, it
may be easier and more accurate to create a
3D model
Engineering Text Example
Draw a cabinet oblique sketch
for the piece of furniture.

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