"Art Unwin" wrote in message
...

At the expense of efficiency per unit length

and what does that refer to?? i don't think i've ever heard of something
with those units... they really don't make any sense.

On Apr 21, 5:49*pm, "Dave" wrote:
"Art Unwin" wrote in message

...

At the expense of efficiency per unit length

and what does that refer to?? *i don't think i've ever heard of something
with those units... they really don't make any sense.

Somebody changed the subject. I suppose you can start a new one since
this one has been taken away
Art