EISCO Economy Spectroscope Tube - 500 Lines/mm Grating - Eisco Labs Black

Handheld Small Diffraction Spectroscope Detects the Absorption of Spectra

Eisco Labs Economy Spectroscope Tube

Pocket Handheld Diffraction Spectroscope for Quick Identification in English

Premium Quantitative Spectroscope - 400-700nm Range +/-5nm Accuracy - Eisco Labs

Pocket Diffraction Spectroscope Handheld Spectroscope Light Used in School

EISCO High Resolution Quantitative Spectroscope, 400-700 nm, 5nm

Handheld Spectroscope Light Used in School Lab Trade Shows Lightweight Durable