On 09.01.2007, at 10:29, Douglas Sharp wrote: > Morning Bill, > I think that may well be part of the explanation. I've even noticed > that > cars driving past the house make a difference - you can check for > vibrations easily by putting a bowl of water on the table, the surface > will show you even the slightest vibrations Ah well, if you're fussy about vibration, I believe a concrete slab, suspended from the ceiling (preferably in the cellar) using bicycle tyre tubes works quite well. ;-) colin ------ Unsubscribe or change to/from Digest Mode at: http://www3.telus.net/~telyt/lrflex.htm Archives are at: //www.freelists.org/archives/leicareflex/