Set of 2 charts on heavy stock with aqueous coating (34" x 22") packaged with 6-page booklet (8.5" x 5.25"). Booklet explains range-of-motion (muscle length) testing for muscle shortening and hypermobility. Shortened or over-lengthened muscles underlie much pain and disability. Locating these are a first step in treating muscle and trigger-point pain syndromes.