- Anyone kno which green laser diode will project a 90 degree pattern parallel to the floor to reveal dust
Be sure to click 'more' and select 'suggest as answer'!
If you're the thread creator, be sure to click 'more' then 'Verify as Answer'!
Like this:
This is the lens I attach to the Laser module
You can also get a laser line level at a hardware store. They use them to put up celling tiles. Some pet stores have small handheld laser pointers with different line generating caps as cat/dog toys for a few dollars - usually the batteries cost more than the laser.
