c. 1930's american industrial "posture line" factory workshop stool fabricated by the toledo metal furniture co., toledo, oh. nearly all parts of the chair are comprised of steel, cold rolled and die formed. the base is rigidly braced and has long wearing quality. the braces which make the base rigid are held in place by retainers set inside the "u" shaped legs, so that there is no pivoting motion to weaken the construction. the back wire or spring support is made of spring steel and yields pleasantly to the pressure of the body. four bolts with large size wing nuts hold the seat and "spider" in the base of the chair. adjustment of height is accomplished by removing the wing nuts and bolts, setting at proper heights and replacing the bolts. no tools are necessary to make this adjustment, which is three inches on each chair by half inch steps. the seat should always be level, which is assured by seeing that the same number of holes appear above or below the brace on each leg of the large steel channel which furnishes the adjustment. the oversized contoured saddle seat is comprised of maple wood. the seat is securely bolted to the steel supports which extend well out toward the edge of the seat. the original elongated oval-shaped back support is of pressed steel on spring wire rods. the adjustable backrest can be locked at any position within the range of its adjustment. the back is hinged so that it always conforms to the lines of the body. brushed metal steel sealed with a clear coat lacquer. the birch wood saddle seat has been sanded and lightly stained. brushed metal finish throughout. base measures 14 x 14 inches, adjustable height ranges from 27 - 34 inches, height with back measures 44.5 (also adjustable).