The radio meter which was invented by a British physicist.
Radio meter design Vogel ミデイアムサイズ made in Germany
Radio meter is invented as a British physicist William Crookes light energy converting into kinetic energy and laboratory instruments. Temperature rises in the black side of the rotor blades in the glass can absorb more solar radiation such as infrared back more than the motion of the molecules of the air near the more black faces to be active in the reaction force, rotor turning mechanism it has become. * About the size and shape by 1 point 1 point blown glass for some errors.
Radio Meter Short
Size: d100 x h180 mm mm
Country of origin: Germany