Franklin spectacles

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Frank·lin spec·ta·cles

(frank'lin),
an early form of bifocal spectacles in which the lower half of the lens is for near vision, the upper half for distant vision.
Synonym(s): divided spectacles

Franklin,

Benjamin, U.S. physicist and statesman, 1706-1790.
Franklin spectacles - an early form of bifocal spectacles in which the lower half of the lens is for near vision, the upper half for distant vision. Synonym(s): divided spectacles
franklinic - denoting static or frictional electricity.