1. METROLOGY د. شذى

2. METROLOGY it is the science of weights and measures. the new definition :metrology is the science of measurement that include all theoretical &practical aspects of measurements.

3. it is a very broad field &may be divided in to three subfields: 1-scientific or fundamental metrology: Concern the establishment of quantity systems &units of measurements. 2-applied metrology: Concern the application of measurements science to manufacturing &their use in society. 3-legal metrology : Concern measuring instruments for the protection of health,environmental &public safety

4. Medical metrology: Science fields where precision is paramount,such as medicine, use a wide array of metrology instruments. These instruments include surgical robots, drug delivery monitoring devices,laser –based medical instruments,computer-assisted navigational systems, that use a four – dimensional positioning system to help surgeons perform complex operations