Serious question: How the fuck are you supposed to math things in inches? When everything's divided into stupid insufferable halves of halves of halves of halves instead of good sensible decimals?? I did a 1917 pants draft, where I had to divide many measurements, and unless my number ended in something like a .5 or .25 or .75 the best I could do was round to the nearest tenth and then eyeball that tenth on the ruler.
Edit: Seems like the answer is "be less precise" and "memorize the fractions so you can translate regular numbers to them". Thank goodness I have no obligation to actually do that! Next time I try an imperial drafting pattern (if ever) I might just convert it all to metric before starting, though eyeballing tenths worked out fine.
