Shelf by Willy Guhl for Aweso-Werke, Switzerland, 1954.
After extensive research into the problems of fixing shelves to the wall or ceiling, Willy Guhl developed this revolutionary shelf, which rests securely on three legs made of steel and rubber, requires no fixing and is nevertheless very stable and firm. The height of the shelves can be easily adjusted on the rails. Two shelves also have integrated book angles.
Bibliography: Willy Guhl, Denken mit den Händen, Museum für Gestaltung Zürich, page 176.