all original c. 1930's vintage american industrial heavy gauge cold-rolled steel adjustable height factory machinist stool designed and fabricated by the angle steel stool co., inc., otsego, mi. the robust four-legged stool contains extension legs for achieving desired height. the base contains distinctive ball-turned feet, which form an integral part of each leg. a multitude of riveted joint stretchers provide added support. very rigid and structurally sound industrial stool. thoroughly cleaned and refinished. seat height measures 26 inches.