On Dec 29 2011, 6:52*pm, Bill wrote:
I've been dithering about buying a high lift farm jack type device for a
couple of jobs,

Don't. Terrifying beasts. Clumsy to use, really awkward for winching
and potentially lethal for lifting. Mine has a mud-cover wrapped
around the "works" which includes pockets for a small wooden mallet
(reverse direction without losing a finger), the instructions
(essential reading before use) and a padlock & chain to stop anyone
else "borrowing" it who doesn't know how to work it.

Get a Tirfor instead.