明铸浑仪反映了宋至元代浑仪的研究成果，留有其流传沿革的痕迹，玑衡抚辰仪是清代所铸的最后一架大型简化浑仪，两仪相距时间跨度有300余年。
The armillary sphere made in the Ming Dynasty was the result of research by scholars of the song Dynasty , and the New Armillary sphere , with an interval of more than 300 years between the two instruments .
玑衡抚辰仪