Blueprint reading; a practical manual of instruction in blueprint reading through the analysis of typical plates with reference to mechanical drawing conventions and methods, the laws of projection, etc (1919)
Fairfield, Howard Parker, 1858-, Kenison, Ervin, Waite, Edward B. (Edward Broughton), 1873-, American Technical Society · Chicago, American technical society · leaf 158
ith the eye-end brokenoff, is forced into a handle of soft pine, making a con-venient instrument for marking line intersections anddistances. i 78 MECHANICAL DRAWING 13 Bow Pen and Bow Pencil. Ordinary large compasses are tooheavy and the leverage of the long leg is too great to allow small…
Mechanical drawing · Blueprinting
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