Solution:
Model 1 (Smaller Capacity):
Lower Line = 5 ml (.17 oz)
Upper Line = 13.5 ml (.46 oz)
Model 2 (Larger Capacity):
Lower Line = 7.5 ml (.25 oz)
Upper Line = 15 ml (.5 oz)
Your Lunette has 2 very faint (1 cm long) raised lines on the side of the cup. These lines indicate the volume of fluid in the cup.