A hand-held magnifying glass.

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Size: 4217px × 4217px
Photo credit: © Science Photo Library / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: aid, assistance, biconvex, close, close-, convex, detail, diopter, dioptric, education, enlargement, enlarging, glass, hand-held, handheld, inspecting, inspection, investigating, investigation, lens, magnifying, optical, optics, physics, positive, read, reading, school, science, scrutiny, sight, study, vision