Diffraction Grating 80 Lines/mm for Spectrophotometer Teaching Experiments

Diffraction Grating 50 Lines Optical Spectrophotometer for Teaching Experiment

Diffraction Grating 80 Lines/mm for Spectrophotometer Teaching Experiments

Diffraction Grating with 600 Lines for Educational Optical Experiments

Diffraction Grating Spectrophotometer 2mm for Spectroscopy Experiments

Educational Diffraction Grating Optical Device for Experiments Teaching

Optical Diffraction Grating Transmission Type For Spectrophotometer Experiments

Diffraction Grating Spectrophotometer Designed for Educational Settings