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2. Laser level - Wikipedia

   en.wikipedia.org/wiki/Laser_level

   A rotary laser level set up and used to level sand fill in trenches. The graduated staff is leaning on the pile of sand. In surveying and construction, the laser level is a control tool consisting of a rotating laser beam projector that can be affixed to a tripod. The tool is leveled according to the accuracy of the device and projects a fixed ...

3. The 7 Best Laser Levels of 2023, Tested and Reviewed - AOL

   www.aol.com/lifestyle/7-best-laser-levels-2023...

   Hychika Green Laser Level: Another fairly inexpensive option, this laser level wins points for its “very crisp and easy to see” green lines and serious durability, according to our tester ...

4. The best laser levels for DIY and construction in 2022 - AOL

   www.aol.com/news/best-laser-levels-diy...

   Line everything up perfectly, with the best laser levels available today. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 ...

5. Laser safety - Wikipedia

   en.wikipedia.org/wiki/Laser_safety

   Laser safety. Laser radiation safety is the safe design, use and implementation of lasers to minimize the risk of laser accidents, especially those involving eye injuries. Since even relatively small amounts of laser light can lead to permanent eye injuries, the sale and usage of lasers is typically subject to government regulations.

6. Level (optical instrument) - Wikipedia

   en.wikipedia.org/wiki/Level_(optical_instrument)

   A level is an optical instrument used to establish or verify points in the same horizontal plane in a process known as levelling. It is used in conjunction with a levelling staff to establish the relative height or levels (the vertical separation) of objects or marks. It is widely used in surveying and construction to measure height differences ...

7. Laser line level - Wikipedia

   en.wikipedia.org/wiki/Laser_line_level

   A laser line level is a tool combining a spirit level and/or plumb bob with a laser to display an accurately horizontal or vertical illuminated line on a surface the laser line level is laid against. Laser line levels are used wherever accurate verticals and horizontals are required, typically in the construction and cabinetry industries. Some ...