Vintage US SAFTY US Safety Diamond Hinge Safety Glasses They are clean with non-prescription clear lenses. They have US-stamped glass lenses. They are deadstock or in good condition, with what appears to be very few uses. Based on my personal experience, US Safety glasses are less prone to deterioration like shrinkage, and are glasses that can be used more casually for a long time compared to American Optical, etc. There are no problems with use, but please understand that these are vintage items. Frame Width: Approximately 131mm Frame Height: Approximately 45mm Hinge to Hinge: Approximately 122mm Lens Width: 46mm (as marked) Lens Height: 38mm Bridge: 22mm Temple: 5 3/4 (as marked) Please allow for some margin of error. American Optical American Optical Bausch & Lomb Bausch & Lomb TART OPTICAL Tart Optical IMPERIAL OPTICAL US OPTICAL US Safety NORTON Norton WILLSON Wilson CESCO Cesco Ren Yamada Omoshi Channel