matching lot of three american vintage industrial adjustable height factory machine shop stools likely fabricated by the lyon metallic mfg. co., aurora, il. the four-legged bent tubular steel stools retain the original gunship gray enameled finish. the spacious rounded edge seats and slightly contoured adjustable backrests remains in great condition. the original welded joint tubular footrests are tightly affixed against the metal legs. the chrome plated steel disc shoes provide added support and stability. the height of the central solid steel spindle supporting the seat is controlled with a hand dial. priced for the lot of three. a total of six matching stools are available. seat height adjusts from 20 to 27 inches.