Handbook for teachers. A course in manual training for grammar schools .. (1897)
Murray, William W. [from old catalog] · Rochester [N.Y.] Rochester athenæum and mechanics institute, Scrantom, Wetmore & co · leaf 45
n deducting thisfrom the number of degrees in a right angle givesthe angle for the piece a, Fig. 37. The angle may beconstructed with the aid of a protractor. The linesfor the triangular piece a, Fig. 37, should be drawnon the wood as in Fig. 40. The method of constructing the octagon is shownin… … Fig^a 4-6 ManiLal Training Course Another method of finding- the proper angle, andfixing the dial in position, is to drill a small holethrough the plate, close to the style, and then, on aclear night, the dial is so placed that by looking-through this hole the north star is brought into linewith…
Woodwork (Manual training)
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