De la Spartostatique. Book illustration from Library of Congress

Five static corollaries and diagrams demonstrating the principle of parallelogram of forces and behavior of bodies on an inclined plane; with surrounding text.
Illus. and text in: Les oeuvres mathematiques / Simon Stevin. Leyde : Chez B. & A. Elsevier, imprimeurs, 1634, p. 505.
Published in: The tradition of science / Leonard C. Bruno. Washington, D.C. : Library of Congress, 1987, p. 261.