Richey's guide and assistant for carpenters and mechanics : a work of practical information, giving almost every geometrical and practical problem likely to arise in the work of the carpenter, and quick and easy methods for their solution : the use of the steel square, etc., tables showing strength and weight of materials, methods of framing, useful recipes, etc., etc. (1894)
Richey, H. G. (Harry Grant), b. 1868 · New York : W.T. Comstock · leaf 56
50 GUIDE AND ASSISTANT 60—Within an Equilateral Triangle to DrawThree Equal Circles, Each Tangent to Two Othersand to One Side of the Triangle.—Bisect the angles,a, b, c, Fig. 64(2, as shown hy b e, d c and a f; bisect theangle, e b c, hy b g, cutting ^yin Ji. With o as centre ando h as radius draw…
Carpentry
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