在北京建国门立交桥西南角,有一座古老的城堡,它就是闻名中外的北京古观象台。(图一)台上陈放着八架巨型清制天文铜仪,依次为赤道经纬仪、纪限仪、地平经纬仪、地平经仪、黄道经纬仪、天体仪、象限仪和玑衡抚辰仪。这些天文古仪器能够保存至今,可谓是历经坎坷和磨难,实属不易。它们有的在战争年代南迁北运,有的远渡重洋,在异国它乡的土地上度过了20个春秋。在天体仪和地 In Beijing’s southwestern corner of Jianguomen overpass, there is an ancient castle, which is known as the Beijing Ancient Observatory. (Figure 1) Eight giant clear astronomical bronze statues were placed on the stage, followed by the equatorial theodolite, the discipline limit instrument, the theodolite, the horizon instrument, the ecliptic theodolite, the celestial body, the quadrilateral instrument and the Ji-fen balance instrument. These astronomical and ancient instruments can be preserved so far, which can be described as ups and downs and hardship, which is not easy. Some of them migrated to the south in the war years, others crossed the ocean and spent 20 spring and autumn land in other foreign lands. In the celestial body and the earth