let a with an element of the cylindrical sur- templet of card, lead, zinc, sheet iron or face. In working the bed at A D the other flexible material be cut exactly to templet is applied to the soffit and the its pattern, with any convenient hole a point /"is moved along the joint AD and cut through… … with A and AE, Fig. 26. Curve the the templet is reversed, the point/" moves along B C and the coursing bed below templet exactly to coincide throughout with the worked surface (Fig. 26), and B C is worked off to receive the &vm.fg. trace on the soffit edges of the voussoir The edge/"*/, in…
Engineering
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