Babbitt, Arthur B. (Arthur Bradford), b. 1873 · New York, H. Holt and company · leaf 104
other center line forthese holes is a portion of a radial line drawn throughthe center of the circle representing the hole. Theselines should not be drawn to the center of the piece, CYLINDRICAL WORK 93 but should extend only through the circles for whichthey are the center lines. This is shown… … the drawing is complete it will be in the center of therectangle. x\fter drawing the center hues, the meas-urements should be made from these and the drawingbuilt up about them. The introduction of the curved hnes of the objectand the center lines necessitates a new order forinking the drawing.…
Mechanical drawing
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