Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 286
of the generators. (Note,these are all one length.) Then using point 1(b) as centre, describe an arc with the com- ARCH CENTERINGS. 261 passes ; then with b as centre in a 8 (c) is the^point 2 (c). Each of the other pointsdraw an arc with a radius equal to the in the development is obtained in… … 9 Fig. 864.—Plan of Fig. 863, and Setting Out for True Snaps of Ribs. Fig. 867.—General View of Centres for Arcb(Fig. 861). 2(i2 CARPENTRY AND JOINERY. drawn in as shown. For most practicalpurposes half would be sufficient, but thewhole has been shown. The method of In a segmental-on-plan centre,…
Carpentry · Joinery
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