COOK—Local Artist Jim DeVries will hold a class in Beginning Ball Point Pen Drawing on Thursday, March 20 from 6—8 P.M. at Northwoods Friends of the Arts Gallery in Cook. Jim DeVries is a genuine ...

This is done by a gating spring, which, like the spring of a ballpoint pen, is springy and elastic ... joint that bends under mechanical tension," says Professor Bert de Groot from Göttingen's Max ...