The metric system is a system of measurement adopted throughout Zemuria. It is based on the real-life metric system, which was officially confirmed in Trails in the Sky the 3rd, Sun Door 5: "Campy's Who Wants to Be a Mirannaire? Trials in the Sky".

Unit table

English Japanese Comparison
rege リジュ 1 rege = 1 centimetre
arge アージュ 1 arge = 1 metre
selge セルジュ 1 selge = 100 metres
torim トリム 1 torim = 1,000 kilograms
curim クリム 1 curim = 1 kilogram
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