Want to try your hand at lens making? We have several hundred lenses that were not completed in manufacturing. They are double convex, 14 mm diameter, approximately 10 mm focal length. Center thickness is 3.65 mm and the edge is about 1.35 mm. One side is ground and polished, the other is ground and unpolished. It looks as if they may have been in the process of being re-manufacturing from a different figure. Get out the polishing rouge, and get to work!! Manufacturer's #1334052
