Correlating advanced 3D optical profiling surface measurements to traceable standards

In this application note, Bruker Nano describes the advantages of the non-contact inspection method employed by 3D optical profilers, and discusses the best practices and measurement results for some specialized physikalish-technische bundesanstalt (PTB) traceable roughness standards and other low-cost fingernail roughness gages. The correlation results are based on measurement factors that should be understood and considered when imaging and analyzing surface textures that range in roughness from a few nanometers to micrometers in scale.