It's a picture frame clamp !! I needs about a 4" carriage bolt and wing nut to hold the two "V's" together.
Start with the wing nut near the outboard end of the bolt, then place the orange v's at approximate size of frame then tighten the wing nut and pull everything together.
I have one and it is not one of my "favorite" clamps.
I started making frames when I was about 13, and this looks like it would drive me crazy to use. I don't see any advantage gained.
Where there might be an advantage is in chair making or repair. But frames? I think it solves a non-existent problem.
It does, but that is what it was made for anyway. I have seen them for sale in years past.
There is a long band clamp on the market, with 4 loose corners, that looks just as, or even more miserable!
Picture frames are enough trouble. We need more? hehehhheheeheh
yours Scott
Who uses a Lion #4 miter trimmer most often. Not as good as a real 300 pound pedestal foot operated trimmer, but at least I do have the accessory channel/measure so I can see the finished rabbit size as I work.