Richard Clark is a metrologist who publishes the e-newsletter Measurement in the Real World. He has worked in the field of metrology (measurement science), precision measurement and calibration since 1997. He has formal training in measurement systems analysis (Gage R&R) and estimating measurement uncertainty. Mr. Clark has written articles for such professional magazines as Tooling and Production, Quality in Manufacturing and CMM Monthly. He has developed a gage management system from the ground up. He lives in Portland, Indiana (USA) and can be reached at [email protected].