Pretty much everything's been covered. One more thing to remember -- when you hang one of these on a bench, the bottom end of the leg should be resting on something VERY solid -- like a chunk of a tree, sunk in the ground underneath; or a big, thick steel plate, if you've got a concrete floor in the shop. That lets the force of hammering (assuming it's a "hammering" vise, not a "filing" vise) be transmitted downward, without straining the vise mount.
One of mine's got a 1"+ bulge, about an inch from the end of the leg; the tip of the leg is only about 1/2"-5/8" thick; that was (or so I've been told) intended to go into a locating hole in just such a steel plate.
One of mine's got a 1"+ bulge, about an inch from the end of the leg; the tip of the leg is only about 1/2"-5/8" thick; that was (or so I've been told) intended to go into a locating hole in just such a steel plate.