String diagram is a simple tool for analyzing and designing work space such that movement can be minimized. The basic diagram is a scale plan or model on which a thread is used to trace and measure the path of workers. Materials or equipment during a specified sequence of events. It is also common to indicate type of actions being done at each point. This is typically done using the same symbol set that is used in the flow process chart.

String diagram is a simple tool consisting of a scale plan or model on which a thread is used to trace and measure the path of workers, materials or equipment during a specified sequence of events.