by bdring » Tue Jul 26, 2011 10:06 pm
Two lines and a dot? I guess that would work.
One of the features of the two dots method comes into play if the beams are at a 45 degree angle. The distance between the dots is equal to the distance away from the focal point. Sometimes I like to focus below the surface at the middle. This could help you quickly estimate the middle.
The two lines and a dot might have a similar affect, but you do not need to converge the dots first. The crossed lines will give you the XY and the dot gives the distance to the Z.
Bart
"If you didn't build it, you will never own it."