Consider a bath tap like the picture below. (Not exactly like this picture; just the fact that temperature is controlled by a rotational stick like a clock)
Context, the water is warmer than what used to be. I said:
I used to put the stick on 6, but now It's really hot on 9. (It seems that something has been changed in this building.)
Is it the idiomatic way to describe the relative position of the stick? The only thing that came to my mind at the moment was the analogy between the tap plane and the clock.