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Ezyaid Pregnancy Wheel (Pack of 6), Due Date OB-GYN Calculator, Gestational EDC Wheel for Midwives and Health Workers

$23.16
Make sure this fits by entering your model number. Excellent Accuracy: Simple and clean charting indicates first date of last period, probable ovulation, probable implantation, 1st trimester, 2nd trimester, 3rd trimester, and expected date of confinement Easy to Use: Made of handy 13cm diameter big wheel with rotatable small wheels, simply rotate the wheel by dragging and move the pointer to select LMP