"Dave Bugg" > wrote in message
...
> JohnO wrote:
>>> Lol.... sorry. Fill a cup with ice cubes and water. let stand for 10
>>> minutes. Insert thermometer and look to see that it reaches 32F. Most
>>> probes will be + or - up to 3F. It doesn't matter what the altitude
>>> or barometric pressure is.
>>>
>>
>>
>> Well stirred ice water is EXACTLY 32 degrees F, or 0 degrees C.
>> Assuming there is no salt in the water, which can drop the water temp
>> to about 16 or 18.
>
> But most probe thermometers -- which is what I was talking about -- will
> show a variation of up to 3F.
> --

I meant that as an addition to your post, not a contradiction or correction.
:-) Need more coffee....

-John