What’s so special about a thermometer?
Do you have the proper thermometer to track your body temp?
I recommend liquid metal thermometers because digital thermometers are less accurate when the battery is low, without telling you that they’re inaccurate (because the battery is low!). Also, they can become inaccurate when they are dropped from a height of 4 to 6 inches (What if that happened in shipping?).
The thermometers we recommend are individually tested and marked for accuracy at the factory. You might be able to find this same thermometer in your local pharmacy or large retailer.