Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 533
en the actual scale of an objectand its isometric projection. Peoblem 240. To construct an isometric sccde: the representative fraction (E.F.)tohc^^,le.^^^lfoot. Pig. 291. Draw a line ah of any convenient length, and at the end erect a perpendicular he equalto it. Join ac. Prom h setoff hd equal to… … Kg. 291. Pig. 292 represents the plan of the cube in Pig. 290, rotated till the corner d is the lowest point on the drawing. It repre- ISOMETRIC PROJECTION 513 sents the isometric drawing of a cube. All the edges, with theexception of the three perpendicular lines, are at an angle of 30°with a…
Geometrical drawing
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