Mechanical Drawing Exercise Three Inscribed Squares with Rounded Corners using Triangle and Bow

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“With a 45 degree triangle draw lines AC and BD through the center and construct three squares. Set the bow—pencil to a radius of 3∕8’ and describe a circular arc in the corner of each square just touching, but not intersecting, the sides of the square. Ink the circular arcs first.” —Anthony, 1904

Source

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

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