We all use everyday tools. At work or at home. To measure, communicate, watch etc. The tools are extensions of ourselves, designed to enable us to overcome the limitations of our bodies.They are not always complex tools involving high technology. Some are actually simple things we use every day. They save us time and make life easier, while others help to achieve remarkable feats. Some inventions change forever the way we do things, and many others have remained unchanged since the beginning of time.