late 1960's vintage american four-legged adjustable height stool designed and fabricated by krueger metal products, green bay, wisc. the lightweight stool is comprised of tubular steel with a powder coat silver metallic finish. the original steel disc levelers or "shoes" are intact. the welded joint footrest provided added support and stability. the round seat and slightly contoured backrest contain matching cushions. the solid steel threaded rod moves up and down with ease. salvaged from a chicago public school science laboratory. 14.5 x 28 (seat height), 40" (overall height)"