metrology

Attosecond metrologyAttosecond MetrologySingle View MetrologyOptical Frequency MetrologyFrequency ratio of Al+ and Hg+ single-ion optical clocks; metrology at the 17th decimal place.Defining spinal mobility in ankylosing spondylitis (AS). The Bath AS Metrology Index.International vocabulary of Metrology-Basic and general concepts and associated terms (VIM), BIPM, IEC, IFCC, ILAC, ISO, IUPAC, IUPA...A versatile camera calibration technique for high-accuracy 3D machine vision metrology using off-the-shelf TV cameras and lensesA versatile camera calibration technique for high-accuracy 3D machine vision metrology using off-the-shelf TV cameras and lensesTechniques for calibration of the scale factor and image center for high accuracy 3-D machine vision metrology