Diffraction Grating 50 Lines Optical Spectrophotometer for Teaching Experiment

Optical Teaching Experiment Diffraction Grating 2mm Transmission Grating

Spectroscopy Experiment Tool with 2mm Transmission Diffraction Grating

Transmission Diffraction Grating Optical 50x50mm Teaching Demonstration

Spectroscopy Experiment Tool with 2mm Transmission Diffraction Grating

Optical Teaching Tool Diffraction Grating with Various Line Counts Available

Optical Teaching Experiment Diffraction Grating 2mm Transmission Grating