Brodhead Pietenpol Association

Regarding the first column labeled FIG. and number 4 there. It says cone bearing and in Column B two required. Makes sense. I see one on the outside and one on the inside of the wheel.

Why, though, is #2 (cup bearing) in the FIG. column listed two separate times and each says one required (so two total). Why isn't it listed the same as the #4 cup bearing? Just want to make sure I'm not missing something.

Thanks,

John C