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 534
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… … Fig. 292. A 30° set-square, working against the edge of a tee-squarewill give all the lines in the projection. In an isometric drawing we should always commence withthe point a, called the regidating point: the three lines radiatingfrom a, as ac, ad, and ak are called the isometric axes. Pkoblem…
Geometrical drawing
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