Check this find out!!

newattitude that vise is best mounted onto a steel post dug deep into the ground with a T-Bar welded across the bottom of the pipe before cementing the hole in. Then have someone weld a flat plate onto the top of the post drill some holes to mount the vice.

If you prefer the vice to have some mobility weld that pipe onto a large truck rim, a 10 hole bud works best with the hole side up. Then fill the rim with concrete. Burn a few holes into the rim so you can add a piece or two of re-bar that goes right across to come out the other hole this way your concrete will stay put when you have to move it around the yard which wont be often.

Have a peek under the jaws you may also have a pipe vise.



By the looks of your vise it's made to swivel on its mount and your missing the bolt with T handle that locks it into place once positioned.