391) These should mount on the boots of a space suit, and have
magnets secured to the bottom by the Pillips screws visible.
These are to allow walking in zero gravity during space flight.
They keep the wearer from floating off the deck. (Is that
surface on which they are displayed vertical by any chance? Is
there another pair with the other side visible?)

Unfortunately they were displayed so that the bottom was not visible, you
would think that they would mount them with one showing the top and the
other one showing the bottom, maybe I'll suggest that to the museum.

Rob