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An office chair, or desk chair, is a type of chair that is designed for use at a desk in an office. It is generally comfortable and adjustable and can swivel 360 degrees.

Adjustable Support for School Desks

An office chair, or desk chair, is a type of chair that is designed for use at a desk in an office.…

"A gold chain is formed of wires closely plaited and very flexible, the ends terminating in the heads of water fowl, and having small rings to secure the collar behind." —The Encyclopedia Britannica, 1910

Egyptian Chain

"A gold chain is formed of wires closely plaited and very flexible, the ends terminating in the heads…

"To make the ligament, a very large number of exceedingly fine copper wirers laid close together are soldered to the upper surface of the upper trunnion." —Encyclopedia Britannica, 1910

Kelvin Flexible Metallic Ligament

"To make the ligament, a very large number of exceedingly fine copper wirers laid close together are…