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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 74

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 74
FOR CARPENTERS AND MECHANICS. 67 an indefinite line, as a b, Fig. 91; then take any point ascentre and the radius of the small semi-circle, as i 2; with2 as centre draw the semi-circle, i 3; then, with i as centreand I 3 as radius, draw the semi-circle 3 4; then, with 2 ascentre and 4 2 as radius,… … n§, 03. 86—To Draw a Spiral of One Turn.—First drawa circle, Fig. 92, as large as the spiral is to be; then divideit into any number of equal parts (in this case twelve), aslines a d c, etc.; then divide any one of these lines into asmany equal parts as the circle is divided; then with centrec and…

Carpentry

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