"Truing stands" are mechanical devices for mounting wheels and truing them. A wheel truing stand is a specialized tool for "truing" (straightening) bicycle wheels. It manufactures over 300 products that range from wheel truing stands to hex wrenches. The wheel is subject to little wear, reducing the need for truing and dressing. Truing is restoring the abrasive to its original surface shape. In wheel truing, all these factors must be incrementally brought into balance against each other. Truing them by dressing usually resolves this problem. This plane is itself determined as an average of local deviations in the lateral truing. The truing number coding design can simplify location area identification, expression and calculation.