All-in-One Set Five essential optical grids included: single-slit grid (Einzel-Schlitzgitter), double-slit grid (Doppelschlitzgitter), round-hole grid (Rundlochgitter), mesh grid (Netzgitter), and composite grid (Verbundgitter) for a range of optical experiments. Precise specifications Each piece offers exact dimensions with widths from 0.05 m to 0.20 m and varying spacing, designed to support accurate results in measurements and demonstrations. Education and practice Suitable for academic environments as well as personal projects; this set is designed for students, educators, and experimenters who value precision and reliability. Durable construction Made from durable plastic to withstand many experiments without compromising performance. Practical applications - Demonstrate diffraction and interference in classroom settings - Practice selecting and comparing slit and grid configurations for student projects - Create hands-on optics experiments for hobbyists or makerspaces and home labs