1. PRECISION MACHINED: This set of 5 double and triple slot circular interference diffraction gratings, each measuring 50x50mm, provide high quality optical components for physics experiments and demonstrations. Made with great attention to detail, these grids provide accurate and reliable results for your scientific needs. 2. VERSATILE CONFIGURATION: The set includes single slots with widths of 0.05, 0.1 and 0.2 m, double slots with 0.05 m width and 0.2, 0.3 and 0.45 mm spacing, and point grids with diameters of 0.2, 0.3 and 0.4 mm. This variety allows for a variety of experimental setups and observations. 3. Comprehensive Grid Options: Explore different diffraction patterns with the included grid options. The set features 90 degree cross line grids with 20, 40 and 60 lines/mm, providing multiple choices for your optical experiments. The composite parts even more possibilities with single, double, triple and quadruple slots. 4. Multipurpose Design: Perfect for physics classrooms, laboratories or home experiments. This diffraction grating set is suitable for demonstrating wave characteristics of light, interference patterns and other optical phenomena. Use it to improve your understanding of optics and wave mechanics.