For quick examination of spectral composition of white light.
Consists of a metal tube with draw-out focusing and an adjustable slit, fitted with achromatic objective and prism, in case.
Glass, one each double convex, Plano – convex, concavo – convex, convexo – concave, Plano – concave and double concave lens, in box.
Sizes in 38mm and 50mm.
Lenses, Set of Six (50mm).
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