No need. Wave ruler is a tool for measuring and calculating waves, which can be used to analyze the fluctuations and trends of financial markets such as stocks and futures. However, whether the length of C wave is 1.6 18 times that of A wave is not a simple calculation problem, and it needs to analyze the market data and trends in detail, so C wave is 1.6 18 times that of A wave, so it is not calculated by wave ruler.