Very low laser beam divergence

Here's a video using a laser to prove the earth is flat (it ain't), but the reason I posted this is it shows what a low diverging beam the spot size looks like at some distance.
Start watching at 13 minutes.
https://www.youtube.com/watch?v=GBhDFO4NMrw

Optical and laser specifications: Laser: 3W laser – adjustable collimator – 0.08mRad divergence