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THICK 50MM PLANO CONVEX LENS 100MM FL, CTD.
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Item No: L3960
Price: $4.00
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| Unusual pcx lens 50mm diameter with a focal length of 100mm. Top clear lens diameter of 50mm, bottom tapers down to 42mm diameter. Edge thickness is 16mm, center thickness is 18.5mm. These have a very light AR coating. These may have been used in some sort of military telescope with a few other elements. Edges are blackened. |
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