Practical mechanical drawing and machine design self taught .. (1907)
Westinghouse, Charles. [from old catalog] · Chicago, F. J. Drake & co. · leaf 71
::..ir … Fig. 153. GENEEAL INSTRUCTIONS 69 them. Whenever figures or notes occur in a sec-tion, the section lines should not be drawn acrossthem. Instructions for Inking. Never begin the inkingof a drawing until the pencilling is completed.Always ink the circles and circular arcs first, be-ginning with the…
Mechanical drawing · Machine design
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
