How the Grinch Stole Christmas (2000)

Revealing mistake: When the mayor has his head shaved by the Grinch, Clint Howard grabs the clippers and shaves his own head down the middle. His hair is yanked off his head before he even moves his hand. Even better in slow motion.

Grinch: Hello!
Grinch's Echo: Hello! Hello! Hello!
Grinch: How are you?
Grinch's Echo: How are you? How are you? How are you?
Grinch: I asked you first.
Grinch's Echo: I asked you first. I asked you first. I asked you first.
Grinch: Oh, that's real mature. Saying exactly what I say.
Grinch's Echo: Exactly what I say. Exactly what I say. Exactly what I say.
Grinch: I'm an idiot.
Grinch's Echo: You're an idiot.
Grinch: [Whispering] All right. Fine. I'm not talking to you anymore. In fact, I'm going to whisper. So that by the time the sound of my voice reverberates off the walls and gets back to me, I won't be able to hear it.
Grinch's Echo: You're an idiot.

Trivia: Director Ron Howard eventually decided that he had to experience what the cast was going through (since they all had to spend so much time in makeup, especially Jim Carrey) so Howard wore the Grinch makeup one day and directed all day long as the Grinch.

Question: In the beginning, there is a watchman that announces "Another minute closer to Christmas!" as each minute ticks off a countdown clock. Assuming that each panel (days, hours minutes) is on a revolving wheel of some sort, how can the three wheels work correctly in such close proximity to each other? Granted, only the minutes part moves for the sake of the story, but it still begs the question.

Movie Nut