The WYL-3 dial stress meter is an instrument used to measure the birefringence of transparent objects due to internal stress. It has both quantitative and qualitative functions, simple and convenient operation, very suitable for industrial applications. The source of this stress (birefringence) is caused by uneven cooling or external mechanical effects. It directly affects the quality of optical glass, glass products, and transparent plastic products. Therefore, stress control is an extremely important part of the production process of optical glass, glass products, and transparent plastic products. This stress meter can qualitatively or quantitatively identify the quality of products (tested parts) by observing stress. It is widely used in optical glass, glass products, and transparent plastic products industries for rapid and large-scale inspections, which solves the problem that mathematics cannot actually be passed. Complex issues. Main Specifications Quantitative position: Stress measurement range 560nm (first-level interference color) or less Full-wave plate optical path difference 560nm Light diameter of analyzer φ150mm Table glass clear aperture φ220mm The maximum height of the sample can be measured 250mm Qualitative position: Stress measurement range 280nm (first-level interference color) or less Resolution 0.2nm Light source 12V/100W incandescent lamp Power supply AC220V±22V; 50Hz±1Hz Mass (net weight) 21kg Dimensions (L×b×h) 470mm×450mm×712mm