On Thu, 19 May 2005 20:34:27 +0100, Kay wrote:

Tack a piece of string with a weight to each face of the post. If
the post leans in one direction, the string will hang away from that
face.

I like it, simple and effective but you need to ensure that the
suspension point is the same distance from the post as the thickness
of the weight.

--
Cheers
Dave. pam is missing e-mail