€¢ Solid brass construction €¢ Create accurate repeated angle cuts on rafters and stairs €¢ Attach to metal carpenter square for accurate; repeated angle €¢ Made in the USA >> Solid brass construction for longevity. Attach these to a metal carpenter square for accurate repeated angle cuts on rafters; stairs; and similar applications. The stair gauge twists to tighten into place for repeated cuts. Sold in pairs. Proudly made in the USA."