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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 62

An illustration from 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, leaf 62
ngent to the Given Circle andtheir Diameters Forming a Regular Polygon.—Draw the two diameters a b and c d dX right angles to each FOR CARPENTERS AND MECHANICS. 55 other, Fig. 71; then divide the circle into twice as manyparts as there are semi-circles required, commencing tospace from a; then draw… … ing points 4, 5, 6, 7, which are the centres for the semi-circles, and from any of these points to the given circle isthe radius, as 4 d. 68—To Divide a Circle into Concentric RingsHaving Equal Areas.—Divide the radius, a c, Fig. 72,into as many parts as areas required, as i, 2, 3, etc. With^ ^ as…

Carpentry

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