[Horizontal sundial with plumb line inlaid with enamel]
Horizontal sundial with plumb line inlaid with enamel, clear, the dial is 11.5 cm long and 7.6 cm wide at most. Made by the Qing Palace Building Office. The old collection of the Qing Palace
The dial of this sundial is in the shape of an arc, and a level tube is placed in the middle of the arc. One end of the dial is a compass, and the other end is a copper frame with a plumb line hanging on it. The level of the sundial can be adjusted with the help of a level pipe and a plumb line. There is a diagonal line between one end of the dial and the upright copper frame, which is called a dial needle. After adjusting the direction and level of the sundial, the projection of the oblique line on the time dial is the current time.
![图片[1]-Vertical horizontal sundial with enamel band-China Archive](https://chinaarchive.net/Qing dynasty/Clockwork instrument/23724[1024].jpg)
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