Fig. 1443.
Fig. 1444.
Fig. 1445.
On long work a wooden strip is the best, especially if the work has varying diameters and a number of pieces of work require to be made exactly alike. In [Fig. 1445] s represents the wooden strip, and w the work. The strip is marked across by lines representing the distances apart the shoulders of the work require to be; thus the lines a, b, c, d, e, f, g, represent the distances apart of the radial faces a, b, c, d, e, f, g, on the work, and these lines will be in the same plane as the shoulders if the latter are turned to correct lengths. To compare the radial faces with the lines, a straight-edge must be held to each successive shoulder (as already described) that is of smaller diameter than the largest radial face on the work.