I end up doing a lot of lazy maths, and remembering rough numbers.
45MPG? That’s about 10 miles per litre.
8 inches? Eh, 20cm.
Anything remotely technical, I convert everything to metric (and actually take the time do accurately).
Having the inch-fractions to mm table on the back of a ruler is very useful when using old drill bits and spanners.
I end up doing a lot of lazy maths, and remembering rough numbers.
45MPG? That’s about 10 miles per litre.
8 inches? Eh, 20cm.
Anything remotely technical, I convert everything to metric (and actually take the time do accurately).
Having the inch-fractions to mm table on the back of a ruler is very useful when using old drill bits and spanners.