mechanism

In the school workshop , a student carefully takes apart an old clock to learn how it works . He watches the gears and springs and tries to identify each part's function before he touches anything . When he finds the main mechanism , the teacher explains how it controls the movement of the hands . After a few small adjustments , he puts the clock back together and tests it to see if the changes helped . This careful practice helps him understand mechanical systems better and makes him more confident about fixing things .