Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I've always wondered Benny if putting the target at the back of a deep cardboard box would work - the laser beam is still there, I just can't see it in the sunshine/daylight but should show up back in the dark abyss!

It can't hurt, Larry. Maybe staple the box to a white stick? Anything helps. I think it's still easier than trying to use a water level with no helper.