26 cm/inner length approximately 16.2 cm, 27 cm/inner length approximately 16.7 cm, 28 cm/inner length approximately 17.3 cm, 29 cm/inner length approximately 18.0 cm, 30 cm/inner length approximately 18.7 cm, 31 cm/inner length approximately 19.2 cm, 32 cm/inner length approximately 19.7 cm, 33 cm/inner length approximately 20.2 cm, 34 cm/inner length approximately 20.7 cm, 35 cm/inner length approximately 21.2 cm, 36 cm/inner length approximately 21.7 cm, 37 cm/inner length approximately 22.3 cm