Most days I imagine she will have no snow on her bucket.
Neat idea. I may try this myself, living up in the woods of Vermont I have snow on my buckets from Nov-March.
Every country in the world uses it except for the US, Burma, and Liberia.
It certainly doesn't dictate what hobbyists will use for a project. Though what does surprise me is that even people with an interest in science don't recognise the benefits of metric. Mathematical formulas often use metric values for simplicity. No doubt you could adapt them for customary values though it would needlessly add complexity thus increasing chances of error.
Wow, I'm surprised how much my original post got modded down. Didn't realise how sensitive US people were about their units.