1890 - Mechanical Graphics by Frederick Newton Willson – The S Thing
Beautiful Hand Drawn Vector Graphic Illustration Mechanical Element. Stock Vector - Illustration of idea, mechanism: 117212881
Mechanical Graphics: An Educational Course on the Theory and Practice of Mechanical Drawing (Classic Reprint): Frederick Newton Willson: 9780265835647: Amazon.com: Books
Beautiful Hand Drawn Vector Graphic Illustration Mechanical Element. Stock Vector - Illustration of connection, line: 117212803
File:Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for draughtsmen (1897) (14781319695).jpg - Wikimedia Commons
1890 - Mechanical Graphics by Frederick Newton Willson – The S Thing
File:Notes on mechanical drawing, graphic statics, machine design, and kinematics (1909) (14800697883).jpg - Wikimedia Commons