u/El_Vidente

I am doing a welding course and we use this tool to make an outside corner joint. I have asked my tutor what this tool is called and they said "an outside corner joint jig". I have searched online but can't find one, and I am starting to suspect the college have just made this device themselves for the purpose of making outside corner joints. Could anyone tell me if this is a legit tool and if so what it is called so I can get one?