Atwood Wedgewood 52231 21 Inch Vision Range Oven With Piezo Ignitor, Notched. The Atwood 52231 is a 21 inch Wedgewood Vision range oven. Wedgewood Vision ranges use linear valves which improve operation, and give more adjustment capability. It has a centralized high output burners which improve flame distribution. Wedgewood burners are easily adjusted from a low simmer to a full burn to create a perfect cooking experience.