The Spiral Chart often referred to as Square of 9 Link to Spiral Chart
Instructions to login and use the spiral.
Use WDGann for the name to login to the Spiral Graph (Image to the left).
Hold down left mouse button on yellow space to move the Cartesian Coordinates.
Scroll Mouse wheel to zoom in and out or use Ctrl + or Ctrl -.
The simplest approach is to set the degree slider to the date, high, or low of the equity you wish to forecast. Then use the check boxes by the shape or degree to determine if there is a relationship.