Fortunately, after Su Song completed the clock tower, he wrote a book called Xin Yi Xiang Fa Yao (" New Design for an Armillary Sphere and Celestial Globe "), in which he described in text and diagrams the form, materials and dimensions of every component, and how to assemble the entire apparatus.
幸而蘇頌在儀象台建成之後，寫了一部《新儀象法要》，以文字和大量的機械圖，記述各構件的形制、材料、呎寸，以及整體的構聯方式。