By using a non-contact method for measuring the entire surface of an object, the VR is able to collect nearly 800,000 data points for each area scanned. This ensures that any measurement made on the surface is an accurate representation of the actual topography.
In contrast, contact-type measurement systems can only gather data over the areas that their probes touch, meaning that a comprehensive view of the surface cannot be collected.
Even if efforts are made to create a product with a flat surface, it can still have unexpected curvature and warpage. Only measuring the areas that the probe contacts can lead to missed defects and prevent a complete understanding of what is going on with the surface. The VR can quantify the height changes on a surface and display them as different colors, making it easy to see changes in surface shape.
With a probe-based system, it is very difficult to find the highest and lowest points on a surface since the probe needs to scan the entire area and there is no guarantee that the actual maximum or minimum point is scanned. Since the VR collects data over the complete surface, it is able to automatically extract the highest and lowest points so that users can accurately measure the height or depth with little effort.
Conventional measurement systems require several settings to be adjusted before measurement can begin, such as: probe type, scan speed, sample position, scan range, force, etc. With the VR, measurement is simple - just place the part on the stage and click measure. All of the settings are adjusted automatically, producing the same results regardless of the user.