A pointer assembly includes a guide, a helical drive member supported in the guide, a motor for axially rotating the helical drive member, a follower carried by the helical drive member, and a pointer coupled to the follower and movable relative to the guide for indicating a measured value, wherein axial rotation of the helical drive member in a clockwise rotation causes the follower and the pointer to move in a first direction relative to the guide and axial rotation of the helical drive member in a counterclockwise rotation causes the follower and the pointer to move in a second direction relative to the guide.