The Basal Thermometer, whether using it as a tool for natural family planning or to better understand the fertility cycle, provides readings with accuracy within 1/10 of a degree - one of the most accurate digital basal thermometers available. (Most digital thermometers are accurate within 2/10ths of a degree.)

• Fast - Up to four times faster than a glass basal thermometer
• Beeper indicates peak temperature reading
• Large, easy-to read digital display
• Memory recall of last reading
• Waterproof
• For oral use