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Direct Vision Spectroscope
Direct Vision Spectroscope
Direct Vision Spectroscope allows the direct reading of spectral length and employs a prism for dispersion. It is also useful for flame test of basic radicals like sodium, strontium, potassium, copper, etc. There is a single eyepiece and independent focusing tube for the graticule, which carries an index at 590mm with "D", marked right below the scale, corresponding to the wave length of sodium light can be calibrated to a known light source by adjustment of knurled screw. The amount of light admitted to the spectroscope can be regulated by a variable slit, adjusted by a knurled ring round the rating tube.