زمان ديجيتال سرور
Tuesday, December 03, 2024   15:52:43
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Tuesday 4/20/2021 World Metrology Day: 20 May 2024
Past Posters
Tuesday 1/8/2019
World Metrology Day is an annual celebration of the signature of the Metre Convention on 20 May 1875 by representatives of seventeen nations. The Convention set the framework for global collaboration in the science of measurement and in its industrial, commercial and societal applications
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