It appears to be nothing more than a large cuckoo clock, with a single hand.

Also about that time, the first cuckoo clocks with moving eyes came into use.

"What kind of cuckoo clocks come out and sit in line for 13 hours?"

Starting at that time the mechanism of the cuckoo clock was known.

Instead he stretched up and touched the door of the cuckoo clock.

When things start to get romantic, however, they are interrupted by a cuckoo clock.

He goes into the saloon where there is a cuckoo clock on the wall.

The cuckoo clock in the entry said it was almost twelve.

They did not believe in the success of the mass-produced cuckoo clock.

Sometimes, more elaborate devices are involved, as in cuckoo clocks.