When you choose your glasses, you can check the fit using the following scheme:
If the template contains for example the measurement 57-14-140 means you will have:
-Diameter or width of the lenses (also called Caliber) of 57 mm i.e. 5.7 cm
-Bridge (distance between lenses) 14 mm or 1, 4 cm
-Asta (length) by 140 mm or 14 cm
For any questions do not hesitate to contact us, we will be happy to give you more information.