Mechanical graphics. An educational course on the theory and practice of mechanical drawing
A textbook on the theory and practice of mechanical drawing, written by Frederick Newton Willson and published by the Princeton Press in 1890 for engineering students. The plates are line diagrams — projections, intersecting circles, plans of stepped polygons, tinted triangles and labelled construction lines in solid and dashed ink on cream paper, useful for geometric pattern, technical ornament and diagram lettering.
