Kinetic facades were mesmerizing; accuracy bearings, well balanced arms

https://www.scribd.com/document/1041055982/Finials-That-Last-The-100-Year-Trajectory-of-Customized-Copper-Details-196087

Kinetic facades were enthralling; accuracy bearings, balanced arms, and light-weight steels allow panels reply to wind and sunlight, merging design with environmental art.