pocket magnifying glass 30mm lens

Pocket magnifying glass for a 30mm acrylic or glass lens. i was designed to be printing with a 0.4 nozzle, with 0.2mm fit clearance. it was a little lose on my printers but should be fine for others. This one was printed in ABS and the lens caps were acetone glued together but ca glue will work for pla if the fit is a little lose.