The Newport 485 Prism Table is now Newport's PO series. This would now be model PO46. It allows two tilt adjustments, as well as a rotation adjustment. Perfect for prisms and Acousto-optic modulators. Made of black anodized aluminum for light weight. This features precise 80-TPI actuators for tip/tilt functions and another precision spring-loaded actuator for theta rotation. May or may not have prism clamp..