The Newport 812 Laser Mount is the predecessor to the Newport ULM-Tilt-M Cylindrical Laser Mount. As such, it is virtually identical. This mount has also been called the 811 and the 813. This mount will accomodate Cylindrical Lasers with diameters of 1" up to 1.75". The Newport micrometer actuators (which are included) offer +/- 4.5 degrees of precision control over tip and tilt, allowing pinpoint precision aiming of your laser. This mount is meant to be mounted to other Newport stages and positioners.