Work Details:
| Title: | Rotary Demisphere (Precision Optics) |
| Creator: | Marcel Duchamp [French, 1887 – 1968] |
| Culture/Nationality: | French |
| Style: | Dada |
| Date: | 1924 |
| Location: | Museum of Modern Art, New York |
| Medium: | painted wood demisphere fitted on velvet-covered disk, copper collar with plexiglass dome, motor, pulley, and metal stand |
| Dimensions: | 149 x 64 x 61 cm |
