Stick It. It's not called "Gym-nice-tics.
I call them USBs. My mum calls them memory sticks. My teacher calls them USB drives.
If they put a yardstick up and Ravenclaw's tower is the same height, because Gryffindor was trying to beat them, a yard stick isn't 1 foot. Meaning the Gryffindor tower is 3 feet or a yard taller than Ravenclaw's tower.