astronomical instrument
2.Based on studies of the Chinese and Western resources, in the book of the Europeanization of Astronomical Instruments in the Ming & Qing China, Zhang Baichun systematically introduced and analyzed the development of the astronomical instrument and its cultural background in China and in the West.
3.The Square of 9 is an instrument which calculates the mathematical measure of the growth of a form from a germination point, and correlates the motion or growth of that form with the astronomical and astrological influences governing it, allowing the analyst to read the stages of and influences upon the development of the Stupa, lotus, form or market.
