Diffraction Grating 50 Lines Optical Spectrophotometer for Teaching Experiment

Optical Diffraction Grating 38x36mm Clear PET 2mm Thick for Spectrometer

High Precision Transmission Diffraction Grating for Optical Experiments

Diffraction Grating 80 Lines/mm for Spectrophotometer Teaching Experiments

2mm Thick Diffraction Grating for Spectroscopy and Optical Demonstration

Diffraction Gratings Optical Device Suitable for Classroom Experiments