Vintage Friso Kramer work chair from Ahrend de Cirkel dutch design

Friso kramer designed this drawing chair in the 1950s for ahrend de circle. Originally designed as a drawing table chair, but because it is adjustable in height, it can also be used as an office chair or as a working chair on a dining table. Work chair /drawing stool / sturdy architect chair with seating / transparent plywood back (plywood). A classic of industrial design. The seat and back of the chair are adjustable in height. The chair cant turn. Status: in a very good vintage condition with traces of use, see photos. Dimensions about: 40 cm long, 47 cm deep, 76 / 90 max cm high and 41 / max 575cm high seating.