Product Details:

Simple and Reliable
Illuminates Stress Areas
Instantly Determines Heat Strengthened Glass

The CRL Heat Strengthened Glass Detector Kit provides a simple and reliable means of determining whether glass panes are heat treated by illuminating the stress zones created by the heat strengthening process. By shining the specially filtered, battery operated light source on the reverse side of the glass, and observing through the special glasses included with the kit, stress zones become rainbows of color. Annealed glass will remain clear when viewed using this technique. Kit comes complete with flashlight light source, filtered glasses, two "D" cell batteries, and a padded carrying case along with detailed instructions. You will want extra kits for your Service Department Personnel and your Quality Control Specialists.