Made of optically flat plates cemented together. Dimensions 50 x 50 x 50 mm
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Plane, circular, ground edges. Back silvered with protective coating
Kit includes 5 liters round bottom flask with cork, support ring, fluorescein and 3 lens to demonstrate long, short and normal sight.
Comprising a metal holder with sides grooved to hold the lens or mirror. The holder is finished in matt black & is free standing for bench use, to hold lens 50 mm in diameter.
Six lenses with ground & polished faces & ground edges. Comprises one each of: double convex, plano convex, converging concave-convex, diverging concave-convex, double concave, & plano concave. Supplied in a velvet lined box.
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