The BBT thermometer does look like a regular fever thermometer but the only difference is it takes it to another decimal point. For example, a fever one will give you 96.8 but a BBT one will read 96.86 That is how mine reads differently from my 'normal' thermometer.
I live in Canada but I got mine at the drug store in the family planning section. It actually said BBT thermometer on it and came with blank charts for recording. Try asking the pharmacist if you're unsure. They may keep them behind the counter. |