1, measurement standards
Measurement standards, that is, the social public measurement standards, departments and enterprises use the highest measurement standards.
2, the work of measuring instruments
Working measuring instruments, that is, directly used for trade settlement, safety and security, health care, environmental monitoring in the "Chinese people *** and the State mandatory verification of the work of measuring instruments catalog" of the work of measuring instruments.
In addition, the people's governments at or above the county level measurement of the administrative departments of the social public standard measuring instruments, departments and enterprises, institutions, the use of the highest standard measuring instruments, as well as for trade settlement, safety and security, medical and health care, environmental monitoring included in the mandatory verification directory of the work of measuring instruments, the implementation of the mandatory verification.