completely intact early 20th century vintage industrial four-legged adjustable height factory stool. salvaged from an old chicago boiler works complex undergoing demolition. the legs with extensions are replete with several evenly spaced pre-drilled holes for height adjustment. the flared feet provide added support. riveted and welded joint cross-bracing intact. retains the original olive green enameled finish. maple wood seat has a nicely aged varnished finish. backrest contains two bent steel supports or brackets with oak wood backrest. fabricated by the angled steel stool co., otsego, mi.