Transmission Grating Spectrophotometer with Various Line Options Available

Transmission Grating Spectrophotometer for Educational Spectroscopy Use

Diffraction Grating 50 Lines Optical Spectrophotometer for Teaching Experiment

Transmission Diffraction Grating Spectrophotometer for Science Education Use

Transmission Diffraction Grating Optical Spectrophotometer for Teaching

Transmission Diffraction Grating Spectrophotometer for Science Education Use

Diffraction Grating 80 Lines/mm for Spectrophotometer Teaching Experiments

Diffraction Grating Spectrophotometer 50 Lines for Teaching Experiment