Gann Wheel Square of Nine

Gann Wheel price and time hand calculator for forecasting stocks and commodities price movements.Based on the Square of nine square root chart made popular by W.D. Gann.Calculator measures 16"x16" white plastic base with a 12.5" clear plastic moveable wheelComes with user manual and can be used with any book about W.D. Gann (such as Patrick Mikula's books) including Gann's own works.