A polariscope strain viewer is a precision optical instrument used to detect internal stresses in transparent materials like glass and plastics. It helps manufacturers ensure product quality, safety, and structural integrity by revealing hidden strain patterns through polarized light. The Presto Polariscope is among the best strain viewers in India, offering reliable performance, durability, and affordability. Ideal for industries producing glass bottles, PET preforms, and optical components, it ensures stress-free, defect-free products. Visit- https://www.prestogroup.com/products/polariscope-strain-viewer-for-glass-and-plastics/