It's common in science in general to use Metric and not Customary. NASA is a/the notable hold out. Engineering is sometimes done in customary because of contr

It's common in science in general to use Metric and not Customary. NASA is a/the notable hold out. Engineering is sometimes done in customary because of contracts and such, especially when dealing with government agencies. While I love Customary volumes (powers of 2 base units), the rest could stand a change and am glad SpaceX is using Metric.