Persol
PO3092SM 90693R

CALIBRE

This is the horizontal width of each lens at its widest point. It typically ranges from 40 mm to 60 mm.

BRIDGE

This is the distance between your two lenses. In short, the width of the bridge is the space where the frames fit your nose. The size of this piece varies from 14 mm to 24 mm.

ROD

Glasses temple size
This is the length of the temple from each screw to its tip, including the bend at the ear. The rod is generally 120 mm to 150 mm long.