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Elementary projection

Detroit. Public schools. Dept. of instruction, teacher training and research. [from old catalog], Kepler, Frank Roy. [from old catalog] · 1921 · Detroit · 42 pictures

A drafting textbook on elementary projection prepared by Frank Roy Kepler for the Detroit public schools' teacher training department and printed in Detroit in 1921, intended for students learning mechanical drawing. The numbered figures are line diagrams in black ink on tinted paper: ground lines, dashed projectors, lettered points, circles and cones with inch dimensions, useful as geometric line stock and technical lettering.

Projection

Internet Archive · Library of Congress · Public Domain Mark 1.0