Sherline Milling Machine Package Model 2000A-CNC A modified rotary column attachment allows the Z-axis column to tilt from side to side up to 90°. A laser engraved angle scale makes setting the tilt angle easy. As on the rotary column, a clamping ring design locks the column securely at the desired angle. On the back side of this special rotary column attachment is a knuckle that allows the top of the Z-axis column to be tilted either toward or away from the operator. Laser engraved scales indicate movement up to 90° in either direction on this axis.