Chrosziel's Studio Rig Cine VariLock 2 Single has single sided connection for a handwheel, follow focus with 2 variable angle stops and a free wheel and comes with a handwheel, scale and focus lever.
The StudioRig Video's gear unit extends the resulting angle of rotation of the video lenses. Further adjustments are made by the use of different gear diameters. All gear drives can be easily mounted without tools. The three modules of the lens manufacturers are available.
The hand wheel with the VariLock 2 Module, allows easy setting of two mechanical stops and a free wheel.