CALW, a town of Germany, in the Land of Wurttemberg, on the Nagold, W.S.W. of Stuttgart. Pop. (1925) 5,6S1. The name of Calw appears first in 1037. In the middle ages the town was under the dominion of a powerful family of counts, whose possessions finally passed to Wurttemberg in 1345. In 1634 the town was taken by the Bavarians, and in 1692 by the French. The industries include spinning and weaving, etc., and the making of cigars and soap. It trades in wine. It is a health resort also.