We discuss the prospects for measuring the W mass in Run II of the Tevatron
and at the LHC. The basic techniques used to measure M_W are described and the
statistical, theoretical and detector-related uncertainties are discussed in
detail.Comment: Latex, 13 pages, 6 figures, 1 table, invited talk presented at the
Mini-Workshop ``Electroweak Precision Data and the Higgs Mass'', DESY
Zeuthen, Germany, February 28 - March 1, 2003, to appear in the Proceeding
