Metrology comes from the Greek word “metron" and “logos" which literally means the study of measurement. This study covers both the experimental and theoretical aspects of measurement and the determination of the levels of uncertainty of these aspects. The study of measurement is a basic requirement in any field of science and technology, most importantly in engineering and manufacturing. Since metrology is the study of measurement, it is expected to enforce, validate and verify predefined standards for traceability, accuracy, reliability, and precision. All of these are factors that would affect the validity of measurement. The global metrology services market is segmented into two major categories: coordinated measuring machines (CMM) and optical digitizers and scanners (ODS). The CMM market is expected to grow at a compound annual growth rate of 7.2 percent from 2012 to 2018. Increased demand for machine installation, calibration, retrofitting and repairing is supporting this need. ODS, the largest and fastest-growing segment, is expected to grow at a rate of 8.9 percent from 2012 to 2018, reaching market size of $435.8 million by 2018.