Well, nkhoi sent me these messages: From this I thought I'll answer him(there's no question but I guess he want me to comment on it). Also, with the marketsurfer and myself challenging MurrayMath, I thought I'll start a thread about Gann(-related) analysis in general. Reasonable Flames, rational arguments are very welcome! First the answer to nkhoi: What the guy is using is Gann square of 9 chart. Mostly what you see is the wheel that starts from 1. But the guy you mention start from significant low and up. What is it? Simple... it's just the same as how you would use Gann Wheel. Still there is a objective difference. Usual Gann Wheel(that starts from 1) can be mentioned as natural Gann Wheel. It's the same concept as natural squares like 360, 104, and 100 which are the common squares you see in every chart you use. But there are market specific squares like square of range, high and low. This is what the guy is using. In another words, it's a market specific square of nine or Gann Wheel. After that the usage is the same.