Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 35
long tool for eachand every purpose. Any advantage gainedby a short over a long tool, or the reverse,is one of advantage in special circumstancesonly, and not one of saved energy ; theoretic- America, and by their means the screw isdriven home merely by pressure on thetop of the handle. Boring… … Fig. 96.—Scotch Adze Head. ally, the length does not enter into con-sideration at all, except when, in startingto extract a difficult screw, the driver istilted from the upright; but this is at therisk of a broken tool edge and defacedscrew-head. The worker then must decidefor himself as to which…
Carpentry · Joinery
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