VetroSafe® Guardian OTG + VSF Shade #3 Lens Sodium Flare The VetroSafe® StrainView is a

The VetroSafe® StrainView is a system for viewing strain birefringence in glass and polymer objects

* "Wrap around" styles

* Heatwave

Disclaimer: Custom built frames are not certified to pass ANSI Z87

* Lens size up to 56mm

VetroSafe® Guardian OTG + VSF Shade #3 Lens Sodium Flare The VetroSafe® StrainView is aThe VetroSafe Guardian OTG (Over The Glasses) is a "fitover" safety glasses frame capable of being worn over regular glasses, or by itself as a standalone safety frame. For over the glasses use, the maximum compatible frame size is 135mm width by 45mm height and anti reflection coated lenses are recommended. Read the Fitting Guidelines for details.