Okay this may be a really stupid question but I bought a Bayou Classic turkey fryer and with it came this thermometer. It starts at 100F and goes to 750F??? What is that about? I saw the same exact bayou classic thermometer with the "red danger zone" area on one of your pics and it started at 0 degrees and showed red zone at 212 boiling. Do I have a stupid unusable one and do I need to buy a new one? Or can I use this one and somehow gauge where 212 is?