DV StudioRig, follow focus incl. scale (205-02), for one-side-operation. For lens diameter max. 115 mm measured with gear drive 206-12 (not included). Precise gears with practically no play at a very affordable price. A single lock for rod and extension clamp makes changing of lenses quick. Hand wheel with fine-structured surface for save grip. The scale is easy to change and the reference marking is adjustable for the operator or the assistant. Gear drives and gear rings for the different lenses ensure precise adjustments and can be mounted without tool on both sides of the gear unit