Honcheonsigye

Honcheonsigye
Hangul	혼천시계
Hanja	渾天時計
Revised Romanization	Honcheonsigye
McCune–Reischauer	Honch'ŏnsigye

The Honcheonsigye is an astronomical clock created by Song I-yeong in 1669. It is designated as South Korean national treasure number 230.

The clock has an armillary sphere with a diameter of 40 cm. The sphere is activated by a working clock mechanism, showing the position of the universe at any given time.

The clock is owned by Korea University. It is the only remaining astronomical clock from the Joseon Dynasty.

An image of the clock's sphere is shown on the reverse of the 2007 issued 10,000 won banknotes:

See also

• History of astronomy
• National treasures of South Korea

References

• Cultural Heritage Administration: Astronomical instrument and clock