"Nigel M" wrote in message
...
Some men just came to trim a tree below an overhead power cable.
They
had what looked like an electric carving knife, a one handed
chainsaw.

I find it impossible to visualise a *chain* saw which looks like an
electric *carving knife*, since I have never seen a carving knife
with a chain.

Do you perhaps mean an ordinary electric reciprocating saw? That can
be used with one hand.

Franz