Abstract: An apparatus for tilting upper and lower tiers of slats in a venetian blind independently comprises a headrail attached to a top end of the venetian blind. A first shaft is rotatably mounted in the headrail and is operative to tilt the upper tier of slats when rotated. A second shaft is rotatably mounted in the headrail substantially parallel to the first shaft to tilt the lower tier of slats. A driving member is pivotally mounted in the headrail and is movable from a first position engaging the first shaft and disengaged from the second shaft, to a second position engaging the second shaft and disengaged from the first shaft. Rotation of the driving member causes rotation of the engaged shaft. A control rod rotates the driving member, and moves the driving member from the first position to the second position.