1920 Article Optophone Skeleton Device Blind Reading Optacon E Fournier SCA3 XGD9 Also in the lower half

Also in the lower half of this image there is a black scuff mark

Keywords specific to this image: air-conditioning

Promoted in the ad is the Atlas Hair Brush made with real bristles

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1920 Article Optophone Skeleton Device Blind Reading Optacon E Fournier SCA3 XGD9 Also in the lower halfThis is an original 1920 one page article (one single sided page), "The Type Reading Optophone" featuring images of the standard forms of the Optophone; and a diagram of the arrangement of the optophone, an electrical device which enables the blind to read ordinary type, invented by Dr. E. E. Fournier d'Albe of Birmingham University. CONDITION This 91+ year old Item is rated Near Mint Very Fine+. No creases. No natural defects. No surface rub. No