If you do not have a millimeter ruler, you can print a very accurate, disposable paper ruler. Simply click here to open the PDF containing a disposable paper ruler, and please disable any "shrink to fit" options on your printer.
Longines Eyeglasses
Longines LG5005-H
Longines LG5008-H
Longines LG5028
Longines LG5006-H
Longines LG5024
Longines LG5022
Longines LG5017-H
Longines LG5029
Longines LG5020
Longines LG5027-D
Longines LG5001-H
Longines LG5011-H
Longines LG5004-H