Definition and Concept of Metrology

Metrology is a science of measurement.Metrology may be divided depending upon the quantity under consideration into: Metrology of length,metrology of time etc.Depending upon the field of application -industrial metrology and Medical metrology etc.
Engineering metrology is restricted to the measurement of length,angles and other quantities which expressed in linear or angular terms.
In a border sense metrology is not limited to length and angle measurement but also concerned with numerous problems theoretical as well as practical related with measurement such as
1. units of measurement and their standards
2. Methods of measurement based on agreed units and standards.
3. Errors of measurement
4. measuring instruments and devices
5. Accuracy of measuring instruments and their care
6. Industrial inspection
7. Design, manufacturing and testing of gauges of all kinds