Is the pop up timer in a turkey accurate?

I have a turkey in today, almost 20 lbs. According to the cooking charts it should have taken 4 1/2 hours to cook but the pop up timer thingy went off at three hours (at 350 degrees). I don’t have a meat thermometer to check. How can I tell if it’s really done?

How can I tell if a turkey is fully cooked?

I am roasting a wild turkey (I'm told it cooks just like a store bought) and obviously it does not have a pop up timer. I also do not have a meat thermometer. Any ideas?? I guess I should say I don't know the weight exactly, I can only estimate.

digital thermometers?

I am a home cook who needs a good digital thermometer. I need a good one that can handle up to at least four hundred degrees because I fry with it. I looked online, but I couldnt find anything special. could someone knowledgable please give me an example for a good digital thermometer. I would [...]

What does the HH mean on a Pampered Chef digital thermometer?

I have a PC thermometer/timer that I love. We were frying a turkey and the display started showing an "HH" for the Probe temperature. Any suggestions on what may be wrong or how to reset it? Any help is greatly appreciated!