Jim Alexander wrote:

http://www.laddersafetysupplies.co.u...ffdevices.html



the wheels just make me think what goes up easier comes down easier...

True, but I don't think there is actually much tractile grip from the
top of a ladder anyway. It is the ladder base that does the lions share
of preventing the ladder slipping away from the wall. The top just
prevenets it falling to the side. So the rubber contact from the wheels
probably does a better job of this than the normal ladder end pieces.

--
Cheers,

John.

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