different goldshop using different measurement ( Us/Canada, Uk/AUSIE, China/Jpan, switzerland) in Malaysia.

to be safe, if there are poh kong or tomei, go there to measure and let your bf knows about it (provided he is getting from poh kong or tomei)

a lot of promoters will says it is the same, but I personally measures at different gold shop and they all happen to be different measurements even they mention they are using the same standard. Not all of promoter aware or been train properly.