Collecting listings has surprises
Description
.
Are you looking for a professional and practical optical lens? If yes, look no further! Our product must meet you needs. Made of materials, and sturdy for long-lasting use. Fine workmanship practicality and durability
Features
-Color:Transparent
-Material:
-Size:4.20X4.20X0.75cm/1.65X1.65X0.29in
-Diameter: 42mm
-Magnification: 4.7 times
-Light transmittance: above 93%
-With edge/edge thickness: 2.0mm
-Center thickness: 7.5mm
-This double convex lens can be a nice gift for your grandparents who are presbyopic or have failing vision.
-Temperature: -30℃+85℃
-Can help you read things printed with fonts that are too small to read.
-It is suitable as a classroom teaching tool, and also suitable as a daily tool for the elderly.
-Object distance: 53mm
-It is very suitable as a replacement accessory for magnifier, which brings great convenience.
-Focal length: 68mm
-Made of optical grade material, with high transparency and durability.
round convex lens