Metrology examiners first have an exam called Certified Metrologists, which is similar to the CPA exam and is a qualification exam. JJF 1033-2008 Metrology Standard Examination Specification 4.4 Personnel must have the qualification of registered metrology engineer at the relevant level.

It is the metrological verification certificate that must be tested for the post. This certificate is based on the measurement project you want to engage in, go to a qualified department to train related projects and then take the exam. The first exam consists of two parts: metrological verification certificate.

1, basic knowledge of measurement and laws and regulations

2, professional project examination (theory and practice)

After completion, issue a certificate of metrological verification.

After adding projects, you don't have to take the basic knowledge and laws and regulations.