Polariscope is a vital tool for detecting stress patterns in transparent materials like glass and plastics. Used in quality control, gemology, and research, it reveals internal strains by analyzing light interference. With polarized light and precision optics, this device ensures accurate stress detection, improving product durability and reliability. This guide explores working principles, applications, and key features for selecting the right model. Whether for industrial inspections, educational purposes, or gemstone authentication, polariscope enhances material analysis. Learn how this essential instrument contributes to quality assurance and precise stress evaluation