Research Institute of Engineering Measurement (RIEM) promotes the establishment and dissemination of national measurement standards for length, geometric quantities, mass, density, force, torque, pressure, flow rate, acoustics, ultrasonics, and vibration, and the development of related measurement and evaluation technologies.

In particular, RIEM focuses on the development of innovative measurement and evaluation technologies to establish next-generation measurement standards that address social issues and demands such as carbon neutrality, protection of human health and the environment from exposure to harmful substances, and digital transformation (DX).

RIEM also actively contributes to national and international standardization related to these technologies. Furthermore, RIEM conducts legal metrology operations for consumer protection in commercial transactions, such as type approval (testing and review) and inspection of reference standard instruments for the verification of specific measuring instruments.

In addition, to ensure the proper enforcement of Measurement Act in Japan, RIEM supports the creation and revision of technical standards in response to technological innovations in specific measuring instruments and changes in the social environment surrounding measurement systems.

Internationally, RIEM ensures the international equivalence of measurement standards and promotes the appropriate operation of the OIML certification system for international legal metrology, thereby supporting the smooth overseas expansion of national calibration service providers and measuring instrument manufacturers.