ORIGINAL: BobCo19-65
I just use the thumbs up trick. You would be surprised how many landmarks you can find on your hand and thumb.
You'd also be suprised how many people measure 6 1/2" base to tip (or very close to it). That's called something isn't? Can't remember the word though. I know the measurement was used often a very long time ago. I use it to judge arrrow groupings sometimes.
Isn't that fist heigth or somethign along those lines?
I keep a bow square on a shelf right above my recurve.. Each time I take it down I get the measurement. It hasn'tmoved in several months...