Magnifying glass for blueprint reading

Had a lens laying around so I took some measurements, sketched on paper, designed in solidworks and printed on a tevo tarantula. Designed it for about 0.001" interference but obviously my printer cant hold those kind of tolerances and I suspect the interference is about 0.0025" and it holds the lens nicely. Slots on the side allow light to pass through. There is a small lip that retains the lens from falling through. Print time was about 2 hours.