A ballot recount in a Montreal-area riding gave the Liberals the win by just one vote, and recounts have been triggered in three other key ridings. But what exactly causes a recount to be called? And ...

Soft copper wire : 18 gauge ( wire diameter 1mm ) : 19cm ( 7.5 inch) 2.5 cm ( 1 inch) for clasp 22 gauge ( wire diameter ...