Mechanical Drawing Exercise Shading Sides of Small Circles with Bow Pen

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An exercise to shade small circles with bow pen for mechanical drawing. The paper is first divided into 4” square. At each corners, draw a 3&fras;8” diameter. The shading is done by reducing and increasing the pressure of the bow while drawing the circle.


Anthony, Gardner C. Elements of Mechanical Drawing (Boston, MA: D. C. Heath & Co., 1904)


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