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 545
let it represent theprimitive in section, acbeing the axis, and a thepole. The centre of sphereis the position of the eye.A line from the centre atan angle of 75° with hd will meet this tangent in i ; ai is theradius for drawing the parallel of 75°. The other parallels aredetermined in the same… … Fio-. 302. Another form of projection used for maps is that known asdevelopment. In Probs. 51 and 52 the development of acylinder and cone is illustrated. The curved surface in eachinstance is developed, or straightened out, into a plane. This isnot possible with a sphere. Pig. 303 is an…
Geometrical drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
