of mirror 200 fig2 in one embodiment of the invention in this configuration each of optic holders 912 and 922 has an inner ledge 410 and an outer ledge 430 at the opposite ends of cylinders 400 again wedge 210 and 220 are glued to inner ledge 410 again wedges 210 and 220 are allowed to expand symmetrically toward centerline 702 in order to minimize distortion in this configuration two optical mounts 340 may be needed to hold optic holders 312 and 322 individually fig1 shows a side view of an adjustable turning mirror 1000 for reflecting a light beam in one embodiment of the invention unlike mirror 200 fig2 wedges 210 and 220 are configured with parallel surfaces 212 and 224 adjacent to each other and angled surfaces 214 and 222 furthest from each other furthermore reflective coating 226 is now on surface 222 fig1 illustrates one configuration of mirror 1000 fig1 in one embodiment of the invention mirror 1000 includes optic holders 912 and 922 that are inserted into optical mount 340 fig6 from opposite sides in this configuration the two glued faces of wedges 210 and 220 face one another so that wedges 210 and 220 expand symmetrically outward from centerline 702 in order to minimize beam pointing due to temperature and humidity changes fig1 illustrates a map 1200 of beam reflection achieved by rotating wedges 210 and.