Effecthearts
Colorwhite

Image SuSongClock1.JPG about clock

A scale model of Su Song's Astronomical Clock Tower, built in 11th century Kaifeng, China. It was driven by a large waterwheel, chain drive, and escapement mechanism.

Open DOCX File refers to Microsoft Word file of most recent version
Learn more about files, files extensions and how top open file with unknown extensions at File Extension Database