This two-sided laminated chart is a chart of channels, channel relationships, and images. The channels are drawn in bands that cover the entire body, so you no longer have to wonder where is a channel's influence. Simply diagnose the location and channel involved, pick the appropriate image and therefore channel relationship, and needle the opposite zone identified. It is an excellent reference map for BodyMapping Acupuncture Technique. Size: 5.12" x 4.25"