VDI/VDE 2655 Blatt 1.2-2009 Optical measurement of microtopography - Calibration of confocal microscopes and depth setting standards for roughness measurements
2010VDI/VDE 2655 Blatt 1.2-2010 Optical measurement of microtopography - Calibration of confocal microscopes and depth setting standards for roughness measurement
2009VDI/VDE 2655 Blatt 1.2-2009 Optical measurement of microtopography - Calibration of confocal microscopes and depth setting standards for roughness measurements