| From the early days of history people looked for ways of telling the time, but it was not until the thirteenth century that machines for telling the time|
were invented.These first clocks were very big. They had no faces or hands
but they did have a bell. It rang every hour.
In the seventeenth century, people began to use clocks with faces and
hands and to carry small clocks with them.
For a long time after that, men and women had pocket watches. These
were usually tied (检) to a button (纽扣) on the person's clothes.
It is strange that wristwatches were not used until about 1914. The man
who made the first popular watch was walking in a park one day. There he
saw a woman with a pocket watch tied to her wrist (手腕) , she was feeding
her baby and she needed to have both hands free to hold the child.
Now nearly everybody wears a watch all the time. If you have a
"waterproof" watch, you don't even have to take it off when you go
swimming. Aboul 80 million wat-ches are made every year.