This is from Avery:
LAP JOINT JOGGLE TOOL
Use for lap joint and inspection hole joggles in aluminum skins up to .032? thick. Steel handle with adjustment slots and precision ball bearing rollers. Fully adjustable for set back (width of joggle) and for different material thickness. Comes ready to use / instructions included. https://www.cart.averytools.com/c-9-metal-forming-tools.aspx
Depending on how much joggling you plan on doing, you might want to save the $42 and use the hand seamers...