公元132年张衡创制地动仪、浑天仪和指南车。

AD 132. Zhang Heng created the seismograph, the armillary sphere, and the south-pointing chariot (compass).

人们可以通过浑天仪观测到日月星辰运行的情况。

People could observe the movement of the sun, moon and stars.

历代器物上都有龙的图饰，这是台中自然科学博物馆中陈列的仿宋代浑天仪模型。

The dragon has appeared on Chinese artifacts throughout the ages. This is the model of a fake Sung armillary sphere on display in the Taichung Natural Science Museum.

公元前117年，东汉的张衡制造了大型天文计时仪器——水运浑天仪，初步具备了机械性计时器的作用。

In117bc zhang heng of the east han dynasty manufactured the water-driven celestial globe a large astronomical time-measuring apparatus that had the primitive function of a mechanical time measurer.

梁令瓒为唐代开元集贤院学士，曾与僧一行合作设计过浑天仪，是一个学者暨画家。

Liang was a palace scholar in Kaiyuan era, Tang Dynasty. He has invented the armillary sphere in cooperation with bonze Yixing. He was both a scholar and an artist.