圭表

líng tái shang yǒu hún yí guī biǎo dì dòng yí děng yí qì

灵台上有浑仪、圭表、地动仪等仪器。

There are instruments such as an armillary sphere, gnomon and ruler sundial, and seismometer on the coffin platform.

yǔ qí tā guī biǎo bù tóng de shì zhè jiàn guī biǎo shì yòng de dì lǐ wěi dù shì gù dìng de

与其他圭表不同的是，这件圭表适用的地理纬度是固定的。

In contrast to other gnomon and ruler sundials, this gnomon and ruler sundial can only be used at a fixed latitude.

guī biǎo lì yòng tài yáng shè yǐng de cháng duǎn lái pàn duàn shí jiān

圭表利用太阳射影的长短来判断时间。

The gnomon-and-ruler indicates the time by the length of the shadow of stylus in the sun.