Dr. Muralikrishnan is a mechanical engineer in the Dimensional Metrology Group in the Sensor Science Division of the Physical Measurement Laboratory (PML) at the National Institute of Standards and Technology (NIST). His research is focused on modelling and detecting errors in advanced dimensional measurement systems such as laser trackers, terrestrial laser scanners, and X-ray CT systems. These mathematical models serve as the scientific and foundational basis for documentary standards for performance evaluation of these systems. Dr. Muralikrishnan is currently the chair of the ASME B89.4.19 committee involved in the revision of the laser tracker standard, participates in the development of ASME and ISO standards for X-ray CT systems, and served as the technical lead for the ASTM E3125-17 standards effort for terrestrial laser scanners. Dr. Muralikrishnan is on the editorial board of Precision Engineering, Surface Topography, and Remote Sensing, and is currently serving as guest editor for a special issue on terrestrial laser scanners for Sensors.