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 234
he needle, with the eye-end brokenLs fonvd into a handle of soft pine, making a con-venient instrument for marking line intersections anddistal 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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