I'll do a little research on the tool. Youre right though about it being interesting. Before I started my door welding, I checked the original and the new metals with a sheet metal gauge. Both checked 16 ga.
Mike Burns 1940 Chev 1/2 ton 1953 Chev 1/2 ton 1950 Studebaker Starlight Coupe 1947 Indian Chief 1943 Indian 741