late 1930's vintage industrial stationary four-legged angled steel machine shop factory stool designed and fabricated by the angle steel stool company, otsego, mi. the heavy gauge green painted steel stool contains riveted joint cross-bracing or stretchers for added support and stability. the legs feature distinctive inward turned ball feet. the solid maple wood seat with slightly sunken center has been refinished. salvaged from a chicago area tool & die factory. seat height measures 19 1/2 inches.