Transmission Grating Optical Experiment Tool with Multiple Line Options

Diffraction Grating 50 Lines Optical Spectrophotometer for Teaching Experiment

Diffraction Grating for Spectroscopy Experiment with Multiple Line Options

Optical Diffraction Grating Spectrophotometer with Multiple Line Options

Teaching Optical Experiment Tool Diffraction Grating with Different Lines

Compact Transmission Grating with Multiple Line Options for Science Labs

Teaching Experiment Tool with Diffraction Grating Transmission Features