A real beauty! Great for demonstrating spectra from any visible light source. Precision made heavy duty stainless steel construction with an Amici type 3-element prism assembly, variable optical slit and adjustable eyepiece. Easy to use: Optical slit adjusts by rotating the knurled end piece, and focus is slip type. Contrast and resolution of the spectrum is changed by adjusting the slit opening. Both emission and absorption spectra can be viewed. 4 inches long by 1 inch diameter on the slit end. New with wood case. Edmund has a similar spectroscope for $272.00
