Geometrical drawing and design
A textbook of geometrical drawing and design by J. Humphrey Spanton, published by Macmillan in London and New York in 1913 for school and technical-class students. The 250 line diagrams show lettered constructions — triangles, octagons, tangent arcs, orthographic projections with hatched planes — in fine black ink with dashed guide lines, useful as clean geometric line work and diagram lettering.
