"Automail," he echoes, fascinated and wanting to touch. He thinks, perhaps, that beautiful things of scientific purpose shouldn't be so appealing if they didn't want scientists touching them, but Victor is drawn as if a magpie to a silver plate. "Could you hazard an explanation as to what that is?" Since the mechanic doesn't appear to be there and Victor thinks that the boy can't be entirely useless, seeing as he's wearing the stuff.