Descriptive geometry for students in engineering science and architecture; a carefully graded course of instruction (1915)
Armstrong, Henry F. (Henry Fry), 1868- · New York, J. Wiley & sons, inc.; [etc., etc.] · leaf 55
2. Draw traces for any plane, and find the plan and elevation of a point on it f in front ofthe V.P. and il above the H.P. In Fig. 52 is shown how to set up, in plan and elevation, a perpendicular to agiven plane from any point in it. It will be remembered that a perpendicularto a plane has its… … Fig. 52. figure at the arrow-head. Then turn this line so as to arrange it parallel to oneof the planes of projection, thus showing its true length. Cut off the requiredpart on this true-length line, and by a parallel to XY the length of one of the pro-jections is determined. A perpendicular across…
Geometry, Descriptive
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