Vintage industrial glass lamp

American industrial glass power plant element in the shape of a coil, with a screw step that has been mounted as a lamp. Item bought in the united states in the 1970s. Example mounted in lamp but can also serve as a terrarium... Size: Total height: 43.5 cm. Diameter: 23.5 cm. Height "bottle": 10 cm. Neck diameter: 5.5 cm. Encroachment: 16 cm.