Descriptive geometry; with numerous problems and practical applications
A college textbook of descriptive geometry by William S. Hall, published by D. Van Nostrand in New York in 1922 for engineering students working through projection problems. The plates are numbered line diagrams in fine black rule: cones, cylinders and spheres cut by planes, tangent lines, ground lines, dashed construction lines and lettered points, plus radial fans and wave curves usable as abstract linework.
