Architectural drawing : a textbook that combines the parctical instructions and examples that the student needs, with the suggestive programs, supplementary problems, etc, required by the teacher, written by an architect of wide experience who has also taught the subject for years at Teachers' College, Columbia University, and Mechanics' Institute, New York (1920)
Teale, Oscar S · New York : U.P.C. Book · leaf 48
♦See Fig. 32. TOOLS—IN PRACTICE 45 impossible to successfully join a curved line to astraight line. When a number of circles or arcs of circles are tobe drawn consecutively (concentric), the smaller oneshould be drawn first and each circle or arc added bygradually increasing the radii, by spacing… … F16.35. To prevent the piercing or puncturing of the paperin fine drawing, where it is important the centre pointshould not be visible after the drawing is finished, aninstrument known as a Horn Centre is used. Thisa small circular disc of transparent horn y2 inch orless in diameter (it might be a…
Architectural drawing
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