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bn:03603486n
Noun Concept
Categories: Magnifiers, Corrective lenses
EN
reading stone
EN
A reading stone is an approximately hemispherical lens that can be placed on top of text to magnify the letters so that people with presbyopia can read it more easily. Wikipedia
Definitions
Relations
Sources
EN
A reading stone is an approximately hemispherical lens that can be placed on top of text to magnify the letters so that people with presbyopia can read it more easily. Wikipedia
A hemisphere of glass used as a magnifier when placed with its flat side against a surface with text. Wiktionary
IS A
hand glass
lens
DISCOVERER OR INVENTOR
Alhazen
USE
hand glass
Wikipedia
EN
reading stone
Wikidata
EN
reading stone
Wiktionary
EN
reading stone

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