String Diagram:

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.