Barbara J. Wohlsen |
A 4-Sided Steel-Marking Gauge |
A gauge design developed at the American Repertory Theatre offers an efficient method for measuring and marking standard steel shapes. The tool comprises two 6″ lengths of angle iron, one ¾″ x¾″ and the other 1″ × 1″, arranged in a pinwheel configuration. See Figure 1. These pieces overlap along their exterior faces by ½″. Spot welds on each end hold the gauge together. In its various orientations, this gauge provides measures of ¼″, ½″, ¾″, or 1¾. making it particularly useful for marking much of the tube steel, angle, and bar stock used in theatrical construction. This particular gauge is, of course, only a suggestion: different sizes of angle iron can be arranged to yield whatever measurements ...
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