Diffraction Grating Spectroscope-A pocket size diffraction grating spectroscope for viewing the spectral composition of various light sources. The large eyepiece aperture facilitates the easy viewing of a single, large and bright spectrum which is centrally placed in the field of view. Uses include: Fraunhaffer lines . Flame test in chemicals analysis .Absorption spectra through liquids .Bright line spectra from discharge tubes Overall dimensions: 105 x 25mm (Length x Diameter) Supplied in a rigid box.