Perpetuum mobile, Woodward's wheel. 3D model.
Keywords
pendulum,
metal,
tool,
object,
equipment,
old,
microscope,
antique,
vintage,
steel,
instrument,
stapler,
iron,
office,
business,
isolated,
staple,
laboratory,
technology,
wood,
vice,
screw,
research,
science,
clamp,
device