Everyone loves to rip on the US as one of the only countries that “won’t use metric” but I wonder how many places officially adopt metric but traditional measures are still in common use. In Taiwan it’s very common to buy things in 斤 jin, aka catty. It’s 600 g in Taiwan and slightly less or more in other Sinophone countries. Housing is also measured in 坪 píng, which is the square area of a standard tatami matt. I think Japan uses this too because in TW it’s a legacy of Japanese colonialism.