The Talyrond XL is a high-precision roundness and cylindricity measurement system for large diameter and large radial-swing components. The system can measure components with diameters up to 1,000 millimeters. Key to the system is a vertical column that sits on precision-bearing rails and can be adjusted and fixed in the radial direction to suit the diameter of the component under test. The system’s high-resolution inductive gage is attached to a radial arm with 300 millimeters of travel. The system has a frictionless, air-bearing spindle mounted to a three-footed steel base.