My curiosity is piqued regarding the standard units of measurement used in Eorzea. I recognize several of them from FFXI but have never had a solid definition of any of them. As far as I recall, these are the units used:

Length (from shortest to longest): ilm, fulm, yalm, malm
Mass (from least to most): onze, ponze, tonze

The name of each unit seems to resemble that of an equivalent unit from the United States customary system. However, should we assume the relation of these units to each other is also meant to draw from that system?

I do not recall having encountered any measurement of volume in either game. Does such a thing exist? Are there other units of measurement I may have missed?