Double Twist Dimmer white porcelain chrome knob white frame

Recessed double dimmer in white porcelain with chrome knob in a design that was common in Europe in the first half of the 20th century.

The double dimmer swivels in two directions and has a so-called crown function, which means that it is used to dim two separate light sources.

The supplied dimmer switch is placed in appliance boxes in the wall.