Ring laser gyroscopes facilitate ultra-precise position coordination in a space. A ring laser which feeds upon a high-stability monochromatic laser source follows a closed path. Any deviation which causes a phase displacement is detected. Mirrors with ultra-high reflectivity, so-called GYROS, are used for beam steering. The reflectance of these mirrors is precisely defined. Materion Balzers Optics has the skills required for the manufacturing of the necessary substrate polishing and for the characterization of the particularly low-absorption coated mirrors thanks to IBS technology. Many years of experience in the manufacturing of substrates and coating using IBS-technology enable Materion Balzers Optics to offer a one stop shop solution for these components.