This Advanced Spectrometer is an optical instrument used to determine the wavelength of light and the index of refraction of solids and liquids. The spectrometer features a solid base with turntable, prism table with three spring-loaded adjustment screws, collimator with adjustable vertical slit and convex lens, and an astronomical telescope with cross-hair sighting and Ramsden eyepiece. The turntable features a circular scale marked from 0 to 360° at 0.5° intervals. The spectrometer measures approximately 9 inches tall and 14 inches wide in operating position. Includes one prism holder, one grating holder, dust cover, and a polished wooden storage case. Suitable for advanced physics optics experiments and spectroscopic analysis.