Checking flatness is extremely important for the functional use of many glass products. This involves characterizing flatness for the most diverse areas of use. Whatever the application, Polytec offers you the opportunity to quickly and reliably check how flat your glasses are. Large-area measuring white-light interferometers of the TopMap optical surface profiler series measure the flatness of entire areas quickly, with a large field-of-view (FOV) and with precision in the nanometer and even subnamometer range – no matter whether you’re working in your metrology lab or close to production. These surface profilers can continuously record height data at selected points in real time for immediate feedback regarding the production process.