Originally posted by Bruce Baker
I prefer to use a 60 inch jo, which is shoulder high, makes a good walking stick. Since I have problem gauging the middle, I have added a string whipping (just like found in whipping the end of a rope) to the middle of mine, which makes it easy to find the balance point.
The "under the arm pit legth" is of course proportional and eliminates the guesswork about where the middle of the weapon is since a normal tsuki kamai will put your hands in just the right place when you are relaxed. You will find that the front fingure of the front hand will almost precisely be on the center point of the jo. This is not true when one uses either a longer or shorter weapon.