Strainoptics is the world's leading manufacturer of non-contact, non-destructive stress measurement instrumentation to the glass and plastics industries. We are located at 108 West Montgomery Avenue, North Wales, Pennsylvania. In addition to the internationally recognized GASP® surface polarimeter, our product line encompasses a complete range of instruments, from simple strain viewers and polarimeter systems to specialized on-line and off-line equipment for measuring stress and other optical properties in a wide range of materials, including: Float Glass Architectural Glass Automotive Glass Electronic Glass Container Glass Optical/Scientific Glass Plastic Film Molded Plastics Medical Packaging