American Educational 7-1925 Intermediate Advanced Spectrometer

Advanced Spectrometer Designed for easy set-up and use. This specrometer's sturdy iron base incorporates a 20cm-diameter divided table with highly visible etched graduations and a Vernier scale that can be read to a resolution of 1 minute of arc. The revolving 7cm-diameter prism support rotates 360 degrees and has a height adjustment of 2cm, thereby accommodating a wide range of test conditions. A built-in illuminated auto collimator eliminates the difficulty of telescope-collimator alignment. Accessories include an illuminated magnifier, glass diffraction grating and holder, autocollimation mirror, power adapter, brush, screwdrivers, extra bulbs, and instruction manual.