The new paperback edition of this popular text relates classical two- and three-dimensional geometry to mechanisms. Written by a recognized authority, this book emphasizes geometrical rather than analytical approaches, providing information on familiar planar mechanisms as well as introducing the reader to three-dimensional mechanical movements. The second half of the book is devoted to the applications of screw theory, helping to illustrate that far from being an outmoded intuitive art, kinematic geometry still has a great deal to offer to today's engineers and roboticists.