This page deals with the methods used to test and analyze tribological experiments. There are several methods for tribological testing dating back to the 1500’s when Leonardo da Vinci studied friction. Testing has evolved immensely and includes the use of elaborate machines that are used today, although earlier methods are still used to understand basic concepts and obtain general friction characteristics. In order to understand the mechanisms of friction and wear, several instruments are used to analyze surface properties and topographies. The major test methods and instruments are outlined in the following pages.