A tillage implement has a main frame towed in a forward working directionand toolbar assemblies supported on the main frame. Each assembly has anelongatetoolbar member transverse to the forward working direction with tillage unitsspacedalong the toolbar member for working the ground. A pivot supports each toolbarat anintermediate location on the toolbar for angular adjustment about an uprightaxis relativeto the main frame. Followers at opposing ends of each toolbar member arereceived inrespective guides at fixed locations on the main frame such that the followersareslidable within the guides in the forward working direction while restrictingrotation ofthe toolbar member about a longitudinal axis of the toolbar member relative tothe mainframe. Angular position of each toolbar is controlled by an actuator with anattachedmechanical indicator that can be read by an operator.
