The VideoCheck UA (Ultra Accuracy) multisensor coordinate measuring machine provides unique technical properties for precision applications. Special air bearing technology, integrated vibration isolation, temperature-stable encoder systems with better than 1-nanometer resolution, and a special drive system all support reproducibility in the nanometer range. The 3D maximum permissible error is specified as (0.25 + L / 600) µm per ISO 10360. The measurement volume of 400 mm x 400 mm x 250 mm is unique for its class, and extends the area of application from micro-component measurements to the measurement of micro-features, with tight tolerances, on large workpieces, as well as the calibration of standards.

Due to its modular design, the VideoCheck UA can be equipped with nearly all of the sensors in the Werth multisensor building block kit to support the required application. This includes the 3D WFP Werth Fiber Probe. With its tactile-optical probing principle, this micro-probe has a number of advantages over conventional mechanical-electrical systems. It is significantly less susceptible to damage, has smaller probe spheres (down to 20 µm sphere diameter), and has probe forces that are lower by an order of magnitude (less than one-thousandth of a Newton). In combination with the Werth VideoCheck UA, the 3D WFP has probing uncertainties of only a few tenths of micrometers. The fiber probe is particularly well suited for tactile measurement of three-dimensional microstructures. A few typical applications include measuring tools, watch components, automotive fuel injectors, and micromechanical components. The low probe forces make the 3D WFP suitable for the (nearly non-contact) measurement of sensitive components, such as optical functional surfaces or elastic components made of rubber or plastic.

The 3D fiber probe can be used for measuring both in single point mode and in scanning mode. Special styli have been developed for scanning mode in order to properly capture profile curves on surfaces, for example by running spiral scans along a defined contour. Styli are also available with special extensions for measuring internal geometries (such as small internal threads).