View Spectra with an Accuracy of ±1 Nanometer

Examine the spectra of the Sun and stars, and those produced by minerals in flame tests. It features a high-quality grating and stepped slit for a clear, precise, spectrum. The sturdy plastic construction is labeled with both electron volts and nanometers, as well as a chart of common spectral lines. An instruction manual is included. Size: 12"L x 8 1/2"W.