My 2 cents to some of the really good comments already mentioned. 1kg is 2 US lbs +10%. Learn what 10cm is, use that as base for small stuff Learn a stride that’s 1m. 1m is approx 3ft Get a good scale in grams Celcius is linear, Fahrenheit is not. Hence 0 freezing, 100 boiling, 50 is exactly half that amount of energy.
Now if you’re into engineering I’d recommend you grab yourself a caliper and measure some of the common products you can buy. You’ll notice that anything in 16th, 32th or even 64th is a most likely an approximation to a perfect size in mm.
It’s important to realize that the US is the only real producing country in the world using US customary. Relatively speaking there’s very little actual manufacturing being done in true US customary.
I’ve always done dry in lugs. I do make sure my threads are really clean. I don’t think that anti seize is that bad on a bolt that can withstand a lot of torque. Just make sure you apply a thin layer on really clean degreased threads. Don’t plaster, use a torque wrench. Usually anti seize is applied in areas where bolts aren’t very accessible or rarely removed. People used to put them on spark plugs, but that is no longer recommended by most manufacturers.