National Physical Laboratory

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The seven fundamental measurement units (SI units) are realised at the National Physical Laboratory, the UK home of measurement.

We have a selection of videos and information about the SI units that you can find below.

Watch videos and find out more information on the SI units

Ampere Candela Kelvin Kilogram Metre Mole Second



Please note that the information will not be divulged to third parties, or used without your permission