crutch gravity

Accelerator touched the crutch, which had four legs attached to its end like a
microphone stand.
“...It’s finally complete, though I wonder if the weight distribution sensor is enough to
determine the center of gravity. Should I add a compass that adjusts the angles as well?”
He did the appropriate analyses in his mind while talking on the phone. He was talking
to someone called Last Order, a girl who looked only ten years old.
“If necessary Misaka will go negotiate with her and ask to make your share, says Misaka
as Misaka looks towards the kitchen.”
“That’s good. That way if you send it by refrigerated boxed mail it won’t go bad.”
He put his right hand through the ring on the crutch and grasped the handle, and the
four legs started to move like an insect’s. Still sitting on the ground, he casually knocked
the floor with the crutch, but even with the staff parallel to the floor the mechanical legs
were able to hold onto the floor and get him up.
(It’s good enough, I guess.)
“You said we’ll definitely be able to see each other this weekend right? says Misaka as
Misaka affirms.”
“...If everything goes along with the schedule, then yes.”
He manipulated the handle once more, and with a sliding sound the crutch shortened
itself, just like a police baton. Accelerator tried to move his wrist to confirm its senses,
hidden inside the sheath that covered everything below his elbow.
(Hmph, guess this will do. I can’t walk without a crutch, but activating my ability will
make this thing useless.)
Accelerator arbitrarily showed his thoughts. He reached out with his crutch, and with
another sliding sound the four-legged staff extended swiftly and knocked away the
various tools on the newspaper.
(...If I add a bit more power to this I might be able to use this as a weapon... But that
would be meaningless. When I have my ability activated I don’t need any other weapons,
and if I don’t have my ability activated when I lift this up I’ll fall over.)

- Toaru Majutsu no Index Volume 19, Chapter 1 Part 1