A 200mm rotary table with a totally ground finish which provides smooth operation and precision in use. Suitable for the larger milling machine commonly used in production, this table features a 3MT centre sleeve, 4 X M12 T-Slots and a 90:1 worm ratio. The hardened and ground worm gives 4 degrees per rotation of the handwheel, the dial is scaled to 1 minute and the vernier scale is calibrated to 10 seconds. Incorporated is a quick release mechanism for hand indexing. The work table is graduated to a full 360 degrees. The centre height when mounted vertically is 135mm. Although factory set, there is provision to adjust both the meshing of the worm gears and the axial adjustment of the worm gears to set the rotary table as you would wish. This is a really good unit, complemented by the 211557 Dividing plates and 211558 Tailstock.