Vertex Dividing Head 189mm Swing 18 Hole 100 Centre Height. 18mm Spindle Hole. Can divide in any angle by the direct, indirect or different methods. The Ration between the worm and worm gear is 40:1. Indirect indexing of all numbers from 2 to 50 and many numbers up to 380 possible. Complete with dividing plates, centre and tailstock.