Experimental model of 'clicker' aid to blind people

Made:
1949
Experimental model of an aid to blind people known as the

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Experimental model of an aid to blind people known as the
Science Museum Group
© The Board of Trustees of the Science Museum

Experimental model of an aid to blind people known as the "clicker".

Details

Category:
Acoustics
Object Number:
1949-171
type:
clicker
credit:
St.Dunstan's