Holographic Diffraction Grating 1000 lines/mm 5 Pack

This five pack of Holographic Diffraction Gratings 1000 lines/mm are highly-efficient, embossed Holographic Optical Elements (H.O.E.), and ideal for the direct viewing and analysis of spectra from gas tubes and other light sources. The brightest possible quality of spectrum is produced with the minimum distraction of visual noise. Use these diffraction gratings in combination with colored film gels for additive and subtractive color demos. Dimensions: 2” X 2”.