Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ..draughtsmen .. . 248 THEORETICAL AND PRACTICAL GRAPHICS. CMAPTEB XVI. OBLIQUE OE CLINOGRAPHIC PROJECTION. —CAVALIER PERSPECTIVE. —CABINET PROJECTION. MILITARY PERSPECTIVE. Exg-. •5= 643. If a figure be projected upon a plane by a system of parallel lines that are oblique tothe plane, the resulting figure is called an oblique or dinographic projection, the latter term being morefrequently employed in the applications of this method to crystallography. Shadows
Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ..draughtsmen .. . 248 THEORETICAL AND PRACTICAL GRAPHICS. CMAPTEB XVI. OBLIQUE OE CLINOGRAPHIC PROJECTION. —CAVALIER PERSPECTIVE. —CABINET PROJECTION. MILITARY PERSPECTIVE. Exg-. •5= 643. If a figure be projected upon a plane by a system of parallel lines that are oblique tothe plane, the resulting figure is called an oblique or dinographic projection, the latter term being morefrequently employed in the applications of this method to crystallography. Shadows of objects inthe sunlight are, practically, oblique projections. In Fig. 407, ABnm is a rectangle and mxyn its oblique projection, the parallel projectors Axand By being inclined to the plane of projection. 644. When the prelectors make 45° ivith the plane this system is known either as Cavalier Perspective, Cabinet Projection or Military Perspective, the planeof projection being •\-ertical in the case of thefirst two, and horizontal in the last. 645. Cavalier Perspective.— Cabinet Projection.—Military Perspective. As just stated, the projectorsbeing inclined at 45° for the system known b}^the three names above, we note that in thiscase a line perpendicular to the plane of pro-jection, as Am or Bn (Fi
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