Ziegler model of the middle ear and external ear.
A Friedrich Ziegler anatomical wax model of the development of the middle ear room and the external ear passage. The model is one of the two in the Serie 9a by Prof. Dr. I. Hammar, Upsala ( reference: Embryos in wax by Nick Hopwood). It gives an enlarged view of 15 times on the human fetus ear of 7 months old and dated 1902. In perfect condition and measurements are 47 x 30 x 43 cm high.