Mueller’s book explicating the various positions of the fetus as it descends through the birth canal during delivery is accompanied by an interactive anatomical model of a female pelvis. It illustrates changes to the fetal head and the use of forceps. Forceps for delivery were first invented in the sixteenth century and new designs were developed over time. Anatomical models were often used for both students and practitioners to learn new methods. In this case, the interactive model allows the reader to train in procedures and positioning of forceps for delivery.