Won't Work in Metric

[thrasyllus]

I've been running for several days in metric (mm) coordinates. Suddenly the DRO for the axes only shows inches. How do I switch back?

I tried the config screen, but that doesn't work.

My G code also sets G21.

Aaaargh.

[Greolt]

Go to; Config / General Config, and in the top left hand corner there is a setting called "Lock DROs to setup units"

Greg