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 246

An illustration from 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, leaf 246 — Position 6. Dra ■ rck with Spread Compass and Lengthening Bar 90 MECHANICAL DRAWING 25 … Position 7. Adjusting Dividers with One Hand. between Legs Note Second and Third Fingers DONTS IN DRAFTING WORK Dont fold a drawing. Dont stick the dividers into the drawing board. Dont use the dividers as picks. Dont use the scale to rule lines. Dont fail to clean the table, board, and instruments…

Mechanical drawing · Blueprinting

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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)

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