A watch for blind people has been in vented in Switzerland. In the middle of every figure there is a small peg, which drops when the hour hand reaches" thfe' figure. The owner feels that the peg is down, and counts back to 12 to determine the hour.
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Ashburton Guardian, Ashburton Guardian, Volume VII, Issue 2445, 19 June 1890
Ashburton Guardian Ashburton Guardian, Volume VII, Issue 2445, 19 June 1890
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