A technical analysis tool developed by W. D. Gann. To draw a Gann Fan, attach the tool at a major bottom/top and drag the mouse to the necessary length.
The resultant Gann Fan consists of seven lines at the following angles:
| Time x Price | Degrees |
| 1×8 | 82,5 |
| 1×4 | 75 |
| 1×3 | 71,25 |
| 1×2 | 63,75 |
| 1×1 | 45 |
| 2×1 | 26,25 |
| 3×1 | 18,75 |
| 4×1 | 15 |
| 8×1 | 7,5 |
Gann considered the 45 degrees line the most important line, where the market has some form of balance. Prices above the 45 degrees line indicate an uptrend, where below – a downtrend. During an uptrend, prices will find resistance at the lines above the 45 degrees line. When prices break below the 45 degrees line. then a possible reversal may be expected. Consequently, prices are expected to find support at the lines below the 45 degrees line.
Similarly, in a downtrend the lines above the 45 degrees line will act as resistance, where the lines below will be support.
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