Historical information
A plastic device to enable a sighted person to communicate with a person who is Deaf-Blind in either standard Braille or Moon. The centre radius of the disc has the ordinary alphabet printed in black. Moving outwards from the centre, are the corresponding letters embossed in Braille, then on the outer edge are the corresponding letters in Moon. The user moved the indicator arm around the disc until the desired letter and corresponding symbol was positioned under the cut-out in the centre of the arm. The deaf-blind person could then touch the disc to determine the letters being communicated. Numbers and punctuation are not included.
Physical description
White plastic disc with black indicator arm