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Mechanical exercises, or, The elements and practice of carpentry, joinery, bricklaying, masonry, slating, plastering, painting, smithing, and turning (1812)

Nicholson, Peter, 1765-1844 · London: J. Taylor · leaf 474

An illustration from Mechanical exercises, or, The elements and practice of carpentry, joinery, bricklaying, masonry, slating, plastering, painting, smithing, and turning, 1812, leaf 474
ce,^ and fixed below with wedges toany required distance, GH containing the forecentre, and IK that of the back centre. Thesecentres are tightened by means of screws. LM the Rest. Fig. 2 large Boring Collar with seven holes^from J an inch to 3| inches diameter. Fig. S a Boring Collar for small… … JR(/.2. 7:o7,<io)iJ^6a.shaijrcz7-th2^.ra//.dv.r^>l%:.^2m!;/^iBhnorvi. 34 TURNING. 373 figure of the perforation is an equilateral triangle,the lower part of the slider forming the base ofthe said triangle; then as a circle may be in-scribed in an equilateral triangle, the collar willfit all…

Industrial arts · Geometry · Building -- Handbooks, manuals, etc · Carpentry · Joinery · Bricklaying · Masonry · Blacksmithing · Turning

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