DescriptionAre you looking for professional quality products with reasonable prices? Are you looking for a sturdy, durable and reliable pressure gauge that can complete multiple tasks? If so, our products will be your best choice! Our professional polarization viewer will meet your needs.Features- Color:Black.- Material:Plastic. - Size:5.80X5.80X4.00 cm/2.28X2.28X1.57 inch. - The polarization viewer is an optical instrument that detects the polarization of light. - Select safe and premium plastic material, durable, having long service life. - Observe the polarization of light and consolidate its theoretical knowledge. - Durable and professional, easy to install to microscope or eyepiece. - Widely used for education, physical experiment, research, or other applications.