Many measuring devices used in eg Germany have both proper units and Freedom units printed on them. It's probably just easier to have one model that you can sell anyone on the globe. Economics of scale and all that.

I'm Norwegian, and it's very common in Norway as well to have e.g. rulers and other measuring devices with both inches and metric units. It's if anything pretty rare to have just one or the other unless it's a "format" where displaying both affect usability - e.g. make the writing too small.