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 128
The inner part of the material of the pipe ex-posed by cutting, is covered by lines about xVth I … inch apart and inclined 45 degrees. Fig. 253 showsthe same pipe with only a portion of its upper halfcut away; in Fig. 255 is shown this partial sectionof the pipe.
Mechanical drawing · Machine design
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