They go by either of these names. Though simple enough, and at first thought almost unnecessary to refer to, it will be found by observation that few mechanics have a perfectly-built trestle. The length should be twice the height. The 3 by 4 piece should be on edge, and it should bear squarely upon the end boards, which in turn should be secured to the legs with screws or nails. The legs should slant in two directions; their bearing location longitudinally being in line with the ends of the 3 by 4 piece, as shown in Fig. 65, so that the trestle will not tilt. Full dimensions for construction are given on the various views, and need not be repeated in the text. The notches for the legs are shown in larger scale views, and are dimensioned in such a manner that no trouble need be experienced in cutting them out.

Fig. 65 - A well-built trestle.