1999 Radiometer Glass Bulb By Duro-Lite - Light Energy Science By Sun Solar

RADIOMETER SPACE AGE SPHERE SOLAR ENGINE

RADIOMETER - The Sphere Powered By The Sun - TEDCO Toys Science Fun

Green Solar Radiometer Crookes Solar Vanes Windmill Gift Home Desk6102

Kikkerland Solar Radiometer Light Mill Science Desk Toy Glass Globe New In Box

Vintage Solar Radiometer By Duro-Lite 90s Science Light Energy Experiment Toy

Crookes radiometer, specifically the model "The Sphere Powered By The Sun TEDCO.