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    What People Are Saying

    Great for making telescopes!
  • Sam
  • 10/07/2015
  • These were used to make telescopes in our preschool camp. The kids loved them and were very excited to learn how the lenses worked. I appreciated that they were individually wrapped although it would be nice if they were all labeled individually. About a third of them were unlabeled. The price was great too.

    reward points

    Lens, double convex, 500mm f/l

    Ages 11+

    Item# OP-LEN4X50

    $1.75 in_stock

    In Stock

    Order now to ship Today. Express shipping is available.
    Product Overview
    All our lenses and circular mirrors are 38 mm in diameter. The focal length (f/l) is noted for each.

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    QUANTITY 1 - 9 10+
    PRICE $1.75 $1.60
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    • Product Details

      Lens, double convex, 500mm f/l

      This double convex lens is 38 mm in diameter. The focal length (f/l) is 500 mm.

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