Changing Units on IOS scales

[AlanK]

I know how to set units in the settings but whilst on the PC you can change the units of overlays by clicking on the bar, how do you do this on IOS?

I have cloud base appearing in M which is useless to me but cant seem to get it to show feet like it once did!?

Help!

[AlanK]

(and like it is on my Ipad, just the phone has change to M)