But you don’t call it “point four five caliber” you call it “forty five caliber”. Similar is 7.62 mm AKA “thirty caliber”. It’s reasonable that someone wouldn’t know that it’s literally just hundredths of inches.
Shotgun gauge is wonky, so it’s not a given that the number would just be a diameter in units they are familiar with. “Grains” are also a meaningless unit to most people.
Seriously, I think a big part of solarpunk ethos is combating the notion that everything has to always be available 24/7. Society pays a lot to deliver every convenience like fruit out of season from the other side of the world.
The last paragraph is a good catch. Someone from outside the US is not going to catch the difference between “a Wisconsin state senator” and “a senator from Wisconsin”.
pH doesn’t necessarily tell the right story if you are concerned about acidity for your teeth, GI tract, or taste. Something like distilled water will turn acidic with a pH of 5.8 due to co2 absorption. There’s barely any “acid” there, though, it just doesn’t have any buffering capability compared to water with some dissolved solids in it (like tap water). What really matters is what they call “titratable acidity”.
https://link.springer.com/chapter/10.1007/978-3-319-45776-5_22