Motorized Mirror Mounts 8MMA60 are designed for precise angular alignment of optical elements. A platform is tilted around two axes. A retaining ring keeps optics in a non-through mounting opening of the platform. The ring is fixed by 3 screws. It has 3 dents with which optics is clamped against similar 3 rests in the platform. The dents are exactly opposite to the rests – this minimizes deformation.