Diffraction Grating 80 Lines/mm for Spectrophotometer Teaching Experiments

Diffraction Grating with Various Line Counts for Spectroscopy Experiments

Lab Grade Transmission Diffraction Grating 50 to 1600 Lines mm 50x50mm Frame

Diffraction Grating Optical Teaching Tool for Spectroscopy Experiments

High Precision Transmission Diffraction Grating for Optical Experiments

School Science Diffraction Grating PET 50x50mm 2mm 38x36mm Transmission

Diffraction Grating Spectrophotometer 2mm for Spectroscopy Experiments

Educational Diffraction Grating Optical Device for Experiments Teaching