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Auxiliary unit for transmission by sighted persons of information to blind and poorly sighted people
Auxiliary unit for transmission by sighted persons of information to blind and poorly sighted people
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机译：视力人员向盲人和弱视人传递信息的辅助单位
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摘要
On the templet (4) which incorporates the letters, figures and symbols (5) which are required to be used has the corresp. equivalents in Braille (6) accompanying them in reverse order, i.e. up and down. The Braille (3) symbols are in the form of holes through the templet or dot markings on it. The markings can be pressed in on a card (10) rear side to form raised points (11) on the card opposite side (10B). The templet is made of transparent plastic which has a rigidity which permits to be pressed inwards with the aid of a pointed object (12), such as a ballpoint pen. The Braille markings are matched to a square marking field on the card in question. The templet can be accommodated in a transparent casing which can be closed like a bag and which an also receive the card.
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