How can we tell what temperature our pans are at?

Also, where do you guys find the cast iron pans?

And, what do others on the list use? Do you use teflon, or cast iron?

Mary

as 285 degrees. Du Pont, a manufacturer of Teflon products, states
>that Teflons "continuous service temperature" is 260°C (500°F), 
>though able to withstand highers temps for short periods of time.
>Therefore I'd say don't heat your Teflon over 260, to be on the safe side.