The Clock at The Burrow with only one hand hung in the kitchen at The Burrow. Instead of numbers, the clock featured reminders such as "time to make tea," "time to feed the chickens," and "you're late." It was probably used by Molly Weasley to keep track of her daily routine. It appears to be weight driven, has many swinging pendulums and strikes the hour and quarters on its three bells.
It also appears in the Third Movie next to the doors in the Hogwarts Hospital Wing