Rayco CMM Fixture Plate - 30" x 30" x .75" x .5" CenterholesRayco CMM Fixture Plate Rayco cast aluminum fixture plates are the toughest plates on the market, all of their plates are Hard Coat Anodized for added strength. We offer plates for all size machines and applications. RAYCO CMM FIXTURE has been the leading CMM Fixture brand and in business for 33 years. Features include 30" x 30" x . 75" Plate 1 4 20 threaded holes spaced apart, 1 2" center to center Engraved Numbers on X Axis Engraved Letters on Y