You will likely find your oven temperature display intriguing! Especially as you have not had an accurate displayed temperature reading for your ovens before.
TLDR? 'Internal oven thermometers are useful bits of kit but they are an indicator of temperature as opposed to accurate reading like the display.' Katy
Aga range cooker oven & hotplate average temperatures are {never the same cooker to cooker, always unique to the owner}[LPG, OIL, GAS, COAL, 13amp basic electric]
Before a conversion to modern electric these temperatures are broadly accepted across the Aga range cooker community.
- Boiling plate around 315℃-330℃
- Simmering plate -100℃ cooler, so around 215℃
- Roasting oven around 220-230℃
- Simmering {bottom right} around 160-180℃ {we have heard of much hotter and much lower!}
- Bottom middle {5 oven} around 175-204℃
- Bottom left {3 oven} around 175-204℃
- Left top oven {5&4 oven} around 115-140℃ {top - bottom of cavity from middle grid shelf}
- Left bottom oven around 65℃
Now - you have a multi element system, so you are in control and have more flexibility!
Advice - Your oven cavity is large, and any ad hoc reading taken with an internal oven thermometer is not going to be as accurate as your display. Your display is calibrated and gives the most accurate reading of temperature after the recommended preheat time.
An in oven thermometer is only meant to be placed in the oven for a maximum of 10 mins, and will read temps 0-20℃ differently than your accurate display. They also have a short lifespan if exposed for longer periods of time than the recommended 5-10mins in the oven.
You have a more accurate temperature indication now beacuse you converted your Aga range cooker. But remember, you are cooking with radiant heat, so a little 'relaxation' is needed as you will never get the same temperature through your oven, and your ovens are individual to you.
You will still have heat variations on the runners as you move up and down the cavity.