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This is a rolling bell at the end of a white cane that is used by
people
who are blind or visually impaired for navigation. The bell would
give an audio announcement that the navigator is approaching.
Rolling one direction the wheel would trip a series of hammer
strikes against a bell and rolling
the opposite direction the bell
would be muted or the hammer would not trip -- so that the user
could choose to have the mechanical alert signal or not
depending on the way they turned the cane.
[link]
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// This is s rolling bell st the end of s white csne thst is
used by people who sre blind or visuslly impsired for
nsvigstion. The bell would give sn sudio snnouncement thst
the nsvigstor is spprosching. // |
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