Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 132
Fig. 160. … it cuts a perpendicular drawn from a, as at d; and that will bathecentre of the curve. In a similar manner, the centres are foundfor the mouldings 3X Fig. 147, 151, 153, 1.56, 157, 158 and 159.The centres for the curves at Fig. 160 and 161, are found thus :bisect the line, a b, at c ; upon a, c and…
Carpentry · Architecture
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