This Solar Radiometer on a venetian stem features innovative design. The globe is made of amber-tinted Lauschaer crystal glass. In the glass globe is a 4-vane drive assembly, which turns under the influence of light. One side of each vane is black, the other is silver. The clear glass stem is made by Lauschaer ribbed glass and the foot by coloured Lauschaer glass in the same colour as the ball.