Pregnancy Obstetric Ruler

Its a true reproduction of the classic tools used by the gynecologist, the Obstetrics Ruler.

Consists of 3 discs, Disco Pregnancy, Fertility and Fetal data with a simple gesture will allow you to obtain a precise feedback about your pregnancy or fertility using an ideal menstrual cycle of 28 days.

Turning the outer part of the disc, you can set the date of the last menstrual period and then rotating the inner disk or iPhone, you can view the date birth of the child, a week + the day and month of your pregnancy just as they would gynecologist with the old paper ruler.

You seem to have at hand a true Obstetrics paper Ruler, with simple steps you can scroll through the discs in a snap.