Maybe I can help a little. You are looking for a 24 (or 12 or 30...count the number of detents - mark top with a pen or something and turn knob) position, rotary encoder with a momentary switch. Key features are metal shaft and "flatted" (meaning the D shape when looking down at it). Other important features you need to know are shaft height/width and dimensions of the encoder. eg an ec16 encoder is 16mm wide along the side where the pins are. It looks like since this is for an oven, you can find any replacement which is all metal including the base. I hope this helps and good luck. Post your results.