Rudderrat
Technically, the ICAO is standardized on Hpa and Mbs is a UK exception. And so is inches in the US, an exception. I still call it millibars, though. Kgs is a unit of mass, while Lbs is a unit of Force. 1 kg would be the same here or on the moon, while a pound here is 1/6th of a pound on the moon.
GF