Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 14
hickness, atintervals of about Sin. or 4in. from end to end, as shown inFig. 1. Some boards have hardwood slips glued into grooves atthe end, as shown by Fig. 3. These slips are to guide thestock of the T-square, and saw^ kerfs should be run throughthem at intervals of about 3 in. (b b. Fig. 3) to… … Fig. 3.—Enlarged Corner of Drawing Board. All drawing-boards should be planed level on both sides, andsquared exactly so that the opposite edges are parallel, and theadjacent ones at right angles to each other. A drawing-boardthat has suffered from rough usage and become indented maybe renovated…
Mechanical drawing
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