Mechanical drawing; a treatise on the drawing of mechanical and machine details (1920)
Jones, Franklin Day, 1879-1967 · New York, The Industrial press; [etc., etc.] · leaf 52
of the shorter leg are one inchapart, the points of the longer will be two inches apart. Byshifting the position of the pivot screw, any other relativeproportion can be obtained. The position of the pivot screwis determined by graduations upon the legs, to which a singleline upon the sliding block… … Fig. 11. Proportional Dividers equal parts, the diameter of the circle being measured by thelarge end of the dividers. In mechanical drafting, this instru-ment is not ordinarily used. The T-square. — Since most drawings consist principallyof horizontal and vertical lines of various lengths, a…
Mechanical drawing
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