Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 168
lines should have arrow heads ateach end and the points of these arrow heads shouldalways touch exactly the lines, the distance betweenwhich is indicated by the dimension as illustrated inFig. 297. The figure should be placed in the middle of thedimension line at right angles to that line, and soas… … When the space between these lines is too smallfor the figures, the lines being very close together,as shown in Fig. 298, the arrow heads may be 186 ROGERS DRAWING AND DESIGN. placed outside and the figures also be put outside,in which case an arrow should be put in to indicatethe proper position…
Mechanical drawing · Machine design
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