Scientists are trying to redefine the kilogram so that it's constant

It’s not fat it’s got big bones

Umm... it's the opposite. The original IPK is losing mass for an unknown reason while the replicas stored across the world are gaining mass. We understand some of the reasons for the replicas gaining mass but not all and have no idea what's causing the loss of mass in the original as it's the only one losing mass.
https://en.wikipedia.org/wiki/Kilogram

It's the same with metre and millimetre. But there's no official centimetre.

Meanwhile the pound has always been constant
#imperialisbetter