Ezyaid Pregnancy Wheel, Due Date OB-GYN Calculator with CRL, BPD, HC AC and FL Guide, EDC Wheel for Pregnant Women/Healthcare Providers

Excellent Accuracy: Simple and clean charting indicates 1st date of last period, conception, missed period, 1st visit dating scan, earliest possible quickening, detailed scan, estimated date of delivery, grow scan etc

Great Value: Includes fetal biometry guides such as CRL (Crown-Rump Length), BPD (Biparietal Diameter), HC (Head Circumference), AC (Abdominal Circumference) and FL (Femur length) on the back of the wheel

Easy to Use: Made of handy 12cm diameter big wheel with rotatable small wheels, just simply rotate the wheel by dragging the pointer to select LMP

Handy Design: Made of durable and lightweight plastic, small handy wheels with printed days, weeks and months for calculating lead times, to efficiently predict the approximate date of delivery

Ideal Pregnancy Planner: Tested and approved pregnant wheel designed for Health Workers (CHWs), midwives, nurses, obgyn doctors, also as best gifts for health care facilitators, medical offices, adoption agencies and fertility clinics