Here’s something I’ve been playing with.

This, I believe, is a formula for calculating the number of stitches on a row for the sleeve cap of a set-in sleeve, given a = half the width of the armhole, b = half the height of the armhole.

I shall write more tomorrow, I haven’t sufficiently explained how to use this to get a complete set of rowcounts for the sleeve cap. When it’s done though, I’d be interested to see if knitters out there concur.

Night!

xxx