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Graham

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Joined
Mar 19, 2006
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How about a history lesson? After some research we look into the ingenuity of Peter L. Robertson, the inventor of what is called in the US, a square head screw. We also look at some products that keep screws and bolts tight. And, as promised we review the Drill Doctor and give it top points.
Take a look.

--
Graham McCulloch
http://www.shortcuts.ns.ca/column
 

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