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

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

    Our top pick is the Tavool Self Leveling Laser Level, which our testers loved for its high level of accuracy, shockproof make, and affordable price, among other features. Tavool...

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

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

    The best laser levels are an essential tool, whether you're doing some home DIY or working as a professional builder.

  4. Laser level - Wikipedia

    en.wikipedia.org/wiki/Laser_level

    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 red or green beam in a plane about the horizontal and/or vertical axis.

  5. Level (optical instrument) - Wikipedia

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

    An automatic level, self-levelling level, or builder's auto level includes an internal compensator mechanism (a swinging prism) that, when set close to level, automatically removes any remaining variation. This reduces the need to set the instrument base truly level, as with a dumpy level.

  6. Levelling - Wikipedia

    en.wikipedia.org/wiki/Levelling

    Laser levels project a beam which is visible and/or detectable by a sensor on the leveling rod. This style is widely used in construction work but not for more precise control work.

  7. Helium–neon laser - Wikipedia

    en.wikipedia.org/wiki/Helium–neon_laser

    A helium–neon laser or He-Ne laser is a type of gas laser whose high energetic medium gain medium consists of a mixture of ratio (between 5:1 and 20:1) of helium and neon at a total pressure of approximately 1 Torr (133 Pa) inside a small electrical discharge.