A gimbal mount has axes of rotation which intersect at the center front surface of the optic. When the mount is adjusted only the beam's angle changes, not its length. In contrast, a non-gimbal mount will shorten or lengthen a beam path as angle is adjusted.

The U100-G and the U200-G ULTIMA^® industry-standard clamp design allows many different types of actuators to be used to adjust the mirror position, to meet the requirements for any application. Actuators can be easily replaced by simply loosening two screws to let the actuator gently slide out from the mount. ULTIMA mounts are compatible not only with standard knob and hex-key adjustment screws, but also with micrometers and motorized actuators. See our Recommended Compatible Actuators in the Accessories section below.

ULTIMA Gimbal mounts feature an aperture designed for beam splitting.  Because of the hollow-hemisphere design, beams are allowed to pass through the aperture allowing beam reflection and transmission.  The aperture entrance is also designed with a deep 45-degree chamfer to accept beams at wide angles.