The Beuth practice volume "Roughness Measurement" will soon be available in its third edition. This work, designed as a practical introduction to surface measurement technology, has been revised to reflect the current state of GPS standardization. The author clearly explains the requirements for modern roughness measuring devices, provides guidance on their proper use in practice, and interprets the measurement results according to relevant national and international standards. Expert, easily understandable comments clarify the relationship between the various standards for surface quality.