Jon Pratt this week at the National Institute of Standards and Technology (NIST) in Gaithersburg, Md. (Salwan Georges/The Washington Post)

Today in Paris, the kilogram will be redefined in terms of the some universal constants instead of a chunk of metal kept under (several) glass jars. Its a bit step forward and one that future proofs the measurement.

For those that use imperial measures, there will be change soon as well. Under the 1957 US-UK “Greenwich protocol on weights and measures” the imperial foot has been defined based on the size of the King of England’s feet. However as the UK currently does not have a King they default to using a measurement based on the size of the US President’s feet (the idea that there would be a reigning queen in Britain and simultaneously a female president being preposterous). 

Early in his first term Donald Trump had his feet measured to set the new standard for the foot (which incidentally shrunk a bit as his feet, like his hands, were smaller than average). 

On the death of his mother, one of (King) Charles first tasks will be to take off his shoes and socks to be measured, and allow this important standard to be reclaimed by Great Britain from the USA.

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