This Cannon stand is used when repairing dwarf multicannons within the Artisans Workshop. It can be made by removing, repairing and replacing the broken pipes in a broken cannon stand. Once repaired, the stand can be added to the cannon base in the middle of the repair room.
This item cannot be taken outside of the repair area. If you leave or destroy the stand, you can get another Broken cannon stand from Isak, even though the destroy information states that it can be retrieved from Askel.