Vintage Brass Cased Microscope Objective W.R.Prior & Co 2/3 N.A 28

This lens gives the first, highly magnified image before this is then enlarged further by the eyepiece. The case lid is engraved with: 2/3. The microscope objective is engraved with 2/3 N.A. 28. On the other side, it is engraved with W.R.Prior & Co, London.

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