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Showing posts with label Unique. Show all posts
Showing posts with label Unique. Show all posts
Tuesday, 18 January 2011
Monday, 1 November 2010
Thursday, 28 October 2010
Tuesday, 12 October 2010
Tuesday, 5 October 2010
Draw A Straight Line Without A Ruler
This is a constrained ball – a little device put at the tip of a pen or a pencil. It also measures the length of the line.
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