Unit grid/measurement customization

I would like to be able to customize the unit that each square/hex represents. I am currently building some maps for a Spelljammer adventure. I would really like to measure the tactical ship-to-ship combat in yards. And I would like to have the system map in million miles (ie “X million miles”). I could see using fathoms or leagues in a naval campaign, or even nanometers if the players get shrunk and have a Fantastic Voyage style adventure. Maybe we could have an option to enter a custom measurement unit as a string?

I really believed that there was already a Feature Request for this.

Glad that you posted this.