re: #84 Sionainn
I believe mine is a jack loom.
If the harnesses are pushed up from the bottom it is a jack loom, if they hang from a superstructure it is probably a counterbalance or countermarch loom, but it is possible for it to be a jack loom (like a Harrisville.) Some people will fight to the death over which is better. I solved the problem by having one of each.