A Bench Bull is an appliance used on the bench to get joinery work up to a more comfortable working height and is also used in place of a Moxon vise.
This one was made with a single 8 foot long Southern Yellow Pine 2x8. I cut it down to 4 feet long, planed them flat, and laminated it double thick. I then cut that in half to 24". I cut 4" off then end of each of those pieces and glued them in as the spacers.
It's 20" long, 7" wide, and 8" tall.
It's held solidly to the bench with hold fasts.
I use squeeze clamps to have it work as a Moxon vise.
There are a ton of different clamping options.