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A simple model to show the working of astronomical telescope, comprising a plano-convex lens diameter 38mm focal length 100mm, mounted in metal tube which slides in an outer tube of 400 x 42 mm, size, with a convex lens objective diameter 50mm focal length 500mm, in case.
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Shiv Dial Sud & Sons, brand name Supertek, founded in 1943 is widely recognized as a leading and trusted manufacturer of Educational Teaching Aids, Laboratory Glassware and Essentials. We are an ISO 9001:2015 Quality Systems Certified Organization. Read More…
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