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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 127

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 127
Fig 175 I20 GUIDE AND ASSISTANT 152—Diagram to Obtain Degrees on the Square.— For instance, if a pitch of 25° is required, use 5I on thetongue of the square and 12 on the blade; for 65° it isjust the reverse, or 12 on the tongue and 5^ on the blade.See Fig. 175. 153—To Mitre a Circle and Straight… … between the two outside lines : connect d and b and /; andc; bisect d b and b c and draw lines at right angles to themto meet at/; then / d is the radius of the mitre joint. 154—Sand-paper File.—A convenient sand-paper fileor rasp is made by dressing a stick to the desired shapeand rip it in two up…

Carpentry

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