Copied from the WKC Master Touch History article.
With the 1992 introduction of the Weber Master Touch, Weber provided a model designed to provide the serious griller with a serious grill. It contained all the bells and whistles. At the time, Weber was creating a “good, better, best” approach to its charcoal grills. The 22.5” kettle lineup for 1992:
-BAR-B-KETTLE with 3 user installed daisy wheels, single front bowl handle (wooden), disk ash catcher with clips, black wheels, single center spoke triangle frame
-One Touch Kettle with one touch cleaning system replacing the daisy wheels, standard cooking grate, dual bowl handles (wooden), disk ash catcher with clips, white wall Weber wheels, standard triangle frame
-Master Touch Kettle: All of the features of the One Touch kettle plus an integrated lid bale, removable lid thermometer below the handle, enclosed ash can and ring assembly, flip style grates, and charcoal fuel baskets.
-Performer kettle: All the features of the Master touch installed in an integrated cart with charcoal storage and available gas assist starting.
Weber produced the Gen 1 Master Touch in the US from 1992 until 1999, at which time both the BAR-B-KETTLE and the Master Touch were discontinued.