Blown Glass Suncatcher Radiometer 7"H Purple Glass Rain Drop 6"H Purple Metal "S" Hook Hanger 5.25"H Total Height=18.25" 3" Diameter Invented in 1873, a radiometric detects UV light from the sun or other sources. Reffered to "sun spinner", the interior vanes of the rotor spin to create gentle enchanting movement. Indoor or Outdoor* * this item is fragile and will not do well in windy areas! Multiples Available! Please Message Me For Bulk Quantities, Custom Bundles and Pricing.