| Disc Diameter | 255 diameter |
| Slots | Twelve 50 x 3 mm slots |
Hand-Driven to show the student stroboscope effects . A circular disc having radial slots extending to the edge of the disc . It is given with a handle for for better grip and rotation.
| Disc Diameter | 255 diameter |
| Slots | Twelve 50 x 3 mm slots |