A system for positioning an object about a remote center of rotation. A
non-movable part provides a stationary reference structure. A movable
part moves relative to the non-movable part. A connector coupled between
the movable part and the object positions the object adjacent the remote
center of rotation and rotates it about the remote center of rotation
responsive to movement of the movable part. Movement of the connector
responds movement of the movable part. First and second force
transmitting components coupled to the movable part move the movable part
and the connector in first and second directions, respectively. Movement
of the connector in the first direction rotates the object about a first
axis passing through the remote center of rotation. Movement of the
connector in the second direction rotates the object about a second axis
passing through the remote center of rotation.