Abstract: A high bandwidth, dynamically rigid metrology system for providing real time control of an optical steering element includes a pair of stabilized laser beam directors (SLBD), a reference subsystem, a tool sensor subsystem, and at least one processor. Each SLBD includes a base, a beam pointing and stabilization apparatus mechanically coupled to the base, three reference beam lasers and a stabilized beam laser attached to the base, and a metric structure which is mechanically coupled to the SLBD providing a locally rigid SLBD coordinate system. Each beam pointing and stabilization apparatus includes an optical steering element and an axis tilt detector. The optical steering element is optically coupled to the stabilized beam laser and steers the stabilized beam laser in response to an input signal. The optical steering element provides error signals associated with a position and an orientation of the optical steering element relative to the locally rigid SLBD coordinate system.