Hi, Mel

I Agree for the ( basic ...) maths.

As no sensor calibration is evoked ... the result could be, i.e.

70°F +/- 10°F ... ( remember the thermistor nominal value tolerance !!! )

what is the sense of the 1/4°F here ...

Ah, Yesssss, I see ... a smart looking gadget !!!

Not so easy, the precise measurements .... don't you think???

Alain