The MABIS Healthcare Glass Basal Thermometer provide temperature readings accurate within 1/10th of a degree - perfect for fertility charting and predicting ovulation. Because accuracy is of the utmost importance, the MABIS Basal Glass Thermometer features:

• Detailed instruction for Fertility Charting Application.
• A hard pen case for safe storage
• No-Rol tri-top preventing rolling and mercury mishaps.
• 6 month supply of Ovulation Charts!

Recording each day's BBT temperature - and charting the pattern of temperature changes - will help you pinpoint ovulation, your optimal time for conceiving a baby.