Rotary demisphere , by marcel duchamp , 1924 , installation , Dada, Kinetic Art style , instruments and mechanisms, Tripod, Camera accessory, Cameras & optics, Easel
A machine that is sitting on a wooden floor.
A machine is standing on a wooden floor. There is a white wall behind the machine with a picture hanging on it. There are two wooden poles that are standing on the machine. 