Pit to Pit / Length Measurements):
1-3M: 23.5cm (PTP) / 35.5 cm (Length)
3-6M: 24.5 cm (PTP) / 39.5 cm (Length)
6-9M: 25.5 cm (PTP) / 43 cm (Length)
9-12M: 26 cm (PTP) / 46 cm (Length)
12-18M: 27 cm (PTP) / 48 cm (Length)
18-24M: 28 cm (PTP) / 49 cm (Length)
