"StveB" wrote in message news:Do1hc.65237$U83.2385@fed1read03...
Two words ......... water level .................

Easy

Cheap

VERY accurate, even at long distances.

Steve

I've been checking this thread watching for another warning in
addition to the bubble problem. ALL parts of the water level must be
at the same temperature. Half in shade and half in sun can also throw
your marks off. At the cheap price of lazer levels today, I would
spring for one if I didn't already have one for this project. A lot
less dick around. One set-up and a marked stage pole is all it takes.
I use water levels myself expecially when going around corners but...

Harry K