On Tue, 21 Feb 2017 15:36:38 +0000, Tim Watts wrote:

On 21/02/17 15:30, Nick Maclaren wrote:
In article ,
Chris J Dixon wrote:


The Rolls Royce solution might be something like the 10 ft version of
this: https://www.niwaki.com/store/niwaki-tripod-ladder/

A tripod ladder is a bad idea, as they are a lot less stable than a
corresponding quadrupod one. We bought an industrial-grade one from


Can you explain why tree surgeons almost always have a tripod ladder?

They have a very wide area of footing and 3 legs is inherently stable on
unplanar ground.

Bit like the old milking stools really - far more stable with three legs
than with 4 as they cope with uneven ground far better.