how can i adjust a chess watch and how can i stop it?

Question

chess timer...

watch = clock.
its a classic chess clock, not digital.

Answer 1

You mean an analog clock? You just need to balance it evenly on both sides. There's are gears on the back that control the clock's time by minutes. Then, turn it to the desired time.
Trust me, I play in tournaments and I own an analog clock.