Buying your Basal Digital Thermometer
You can normally get a Basal Thermometer at a good chemist or health store, btu the range may be quite limited.
Fortunately many Digital Thermometers are available form online retailers. Look for one with a large display for easy reading, and if it has memory features as well that's a bonus.
If you plan to use your Basal Thermometer for charting your Basal Tempertature then look for one that comes with a blank chart pack, otherwise you will ahev to buy one seperately or make your own
Two of the more popular brands are the Fairhaven Health Digital Basal Thermometer, which can be found for aroun $15 or less online, and the BD Basal Thermometer which is oftne slightly cheaper. Various other generic manfacuter Basal Thermometers are available but often don't come with charts.