Old industrial wooden chair 1930

Antique machinist or workshop swivel chair on castors made in 1930's. Possibly from silesia region. The seat, backrest and legs are made of solid wood, which has aged beautifully. Wonderful patina and signs of wear all over. The height of the chair can be adjusted by puling out a lever located underneath the seat and lifting it up. There are four height levels. Backrest height can also be adjusted. The chair is in the great vintage condition, swivel and lifting mechanism is well greased and working. Castors moving freely. The underside of the seat has been painted brown in the past. The cup nuts on the backrest are the only modern addition. Dimentions: Total height: 85 - 97cm (33.5" -38") Seat height: 54 - 66cm (21.3" -26") Seat width: 42cm (16.5") Seat depth: 40.5cm (16") Backrest: 34cm X 8cm (13.4" X 3.1") Base (legs) width: 38cm (15") Total depth: 48cm (18.9").