Polariscope for Stress Analysis in PET & Glass Products The Polariscope is designed for identifying internal stress patterns in PET bottles, glassware, and transparent materials. Using polarized light, it reveals strain distribution and helps detect defects that may affect product strength and performance. This instrument is essential for quality inspection, ensuring uniform wall thickness, structural durability, and compliance with packaging quality standards. https://www.prestogroup.com/products/polariscope/