original vintage american industrial four-legged angled steel factory stool likely fabricated by the lyon metallic mfg. co., aurora, il. the pinched and folded steel legs are reinforced with welded joint stretchers for added support and stability. the heavy gauge angled steel base has been refinished. stationary maple wood seat in excellent condition. unique protruding footrest. measures 30 1/2 inches in height. salvaged from a chicago gauge works factory.