group of four matching original american vintage industrial "uhl art steel" adjustable height factory office mobile stools manufactured by the toledo metal furniture co., toledo, oh. the molded plastic saddle swivel seats and contoured backrests remain in great condition. the four-legged stools retain the original baked black enameled finish. contoured backrests tilt to desired angle and moves up and down along the bent steel rod supporting bracket. the distinctive steel base contains four stretchers of concave metal straps connected to the legs and joined by a circular strip in the center. the original swivel casters remain in working condition. the toledo metal furniture company, manufacturer of uhl art steel furniture offered to druggists and soda dispensers, factories and offices a line of convenient, durable, economical and serviceable steel furniture. the uhl idea was conceived and the first chair brought into existence through the "sweat of the brows" of the uhl brothers, joe and clem, in a small bicycle repair shop in toledo, several years ago. this first chair when completed, although crude in comparison with the present-day product, proved the idea a success. it at once established the u-shaped formation of cold-rolled steel as the most ingenious method invented for securing in the legs of chairs, stands and tables a maximum of strength with a minimum of weight without any sacrifice of appearance. it proved that the novel patented truss-locking device was a marvel of simplicity and strength. priced for the lot of four. seat height measures a maximum of 21 inches and a minimum of 16 inches.