Abstract: A weld support gauge block for setting a fused distance between a plate portion and a hat portion of a planetary gear carrier is provided, which includes a first side plate for insertion into and removal from a window cut out in a cylindrical wall of the carrier, a second side plate parallel spaced from the first side plate, a body juxtaposed by the side plates, the body having an interior cavity and a front face and a rear face, the body having a generally central longitudinal bore with a counter bore on a rear end of the body, a first roller juxtaposed between the side plates, and a second roller positioned above the first roller.