Abstract: A mirror housing and a method of housing a mirror for a laser measurement system. The laser mirror housing is T-shaped, with both portions of the T being cylindrical. A mirror is mounted within the mirror housing at a 45 degree angle. A first transparent cover is disposed over a first opening over the mirror. A second transparent cover may be disposed over a second opening opposite the first opening, and the second transparent cover may be used for a spare, in the event that the first transparent cover is damaged.