The work of scoring a granite pavement should be done with a heavy short-handled hammer and a mason's chisel made from steel of about l 1/4in. diameter drawn down to a flat point tin. broad. This is known as a punch. If continuous lines are to be scored across the setts, a string should be stretched between iron pins as a guide; but roughening the setts by punching indentations about 1 1/2, in. apart should serve just as well as scoring lines across.

Fig. I.

Fig. 2. Repairing Worn Stone Steps.