A rotable axle supports at two places in a frame which is held by a spiral spring to the frame. The axle, which projects at the top, carries a flange with tightening screw to take the various model objects with stem of up to 6 mm diameter. A tensions rod is applied to the frame, the axis of which coincides with the rotating axle of the instrument.
| Height | 180 mm |
| Diameter stem | 10 mm |
| Spring constant | 2,5 Ncm/rad |
All units adapted for 110V/60Hz. Contact us for volume pricing and grant assistance.