Dials

In checkers tournaments, each player's reflection time, defined by the competition rules, is controlled by a special clock, with two dials, equipped with a mechanism that, activated by the player who has just made the move, interrupts his timing and starts (restarts) the opponent's timing.

Telephones didn't use to have keypads, but dials.

Telephones used to have not keypads, but dials.

Telephones used to have dials rather than keypads.

Don't forget to clean the stovetop knobs and dials; they can get dirty too.