dividing head, spiral head, universal dividing head, optical dividing head
mõõtevahend, mis omab pöördskaalaga spindlit, et mõõta etteantud pöördenurgale vastavat lineaarmõõdet, head consists of a circular scale, suitably calibrated in degrees and fractions and fitted concentrically to the axis of the machine spindle, specialized tool that allows a workpiece to be circularly indexed; that is, easily and precisely rotated to preset angles or circular divisions