Johnston, Philip Devereux, 1855- · New York, D. Williams Company · leaf 56
es to P, O and O. With Tsquare project points I, J, K and L horizontally inter-secting the vertical lines at T, R, S, P, O and O.Draw T R, R P, P O, O Q, Q S and S T. with 90°angle draw indefinitely O N. With T square projectthe vertex of the pyramid to the left, intersecting O Nat N. Draw N R^ N… … 51 52 A MANUAL OF MECHANICAL DRAWING. Plate 7. Projection of a Cylinder Whose Axis isInclined at an Angle of 30 to the Vertical. With 60° angle draw centre line A B, and at rightangles to A B, using 30° angle, draw centre line C D.With O as centre and radius equal to half diam. ofcylinder draw…
Mechanical drawing
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