The Obdisk 2 provides a means of quickly counting the weeks and days during pregnancy, the timing of antenatal screening test and assistance with determining foetal viability. The Obdisk is invaluable in helping professionals to reduce the risks to pregnant women and their unborn babies.

The double sided 3 disc pregnancy calculator is designed for health visitors and other healthcare professionals with LMP/EDD/DD clinic dates on one side and 1 – 52 weeks infant age on the reverse side.

• Pocket sized at 131 mm diameter
• LMP/EDD/DD calculation
• 1 – 52 weeks infant age calculator
• Complies with UNICEF UK Baby Friendly initiative for use in the NHS
• High quality accurate print for increased accuracy
• Accuracy of +/- one day
• Durable plastic construction