American Swivel and tilting armchair

American armchair in solid oak, swivel 360 °, tilting backwards with more or less intensity the spring adjusts thanks to a dial, adjustable in height screw system with locking at the end of the stroke, mechanism under the seat in cast iron and steel. Seat height mini 46 cm max 55 cm approximately, Height of the backrest in maximum position 96 cm. Backrest height in mini position 85 cm. Very good condition no play in the structure, patina made manually in my workshop.