This industrial factory pedestal chair/ stool was manufactured by Ajustrite part of the Ajusto Equipment Company. The model is CPC-1520. The chair features a solid maple wood seat and adjustable height backrest. The seat is height adjustable and rests on a weighted steel star base with pressed steel glides. The seat height is adjustable from chair level 19.5" to high stool level 28.5" by stepping down on the base and pulling the seat up to any desired height. Adjustrite's motto was "Split second adjustment to any desired height. The overall height adjustment goes from 32.5" - 41.5".