PITTSBURGH, April 23, 2025 /PRNewswire/ -- "I thought there could be a better way to mark a line on building construction materials such as drywall or other substrates," said an inventor, from ...

"so I invented the CHALK LASER. My design offers an improved alternative to using a conventional chalk line that can be inaccurate and messy." The invention provides an improved handheld line reel ...