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Line laser level

Leveling tool consisting of a line laser and a leveling mechanism

A line laser level is a tool combining a spirit level and/or plumb bob to balance a stationary line laser to display a precise horizontal or vertical illuminated line on a surface the line laser level is laid against. Line laser levels are used wherever precise verticals and horizontals are required, typically in the construction and cabinetry industries. Some models are inexpensive enough for do-it-yourself applications.

A cross laser level or cross line laser level utilizes pairs of line lasers to project both horizontal and vertical lines simultaneously. They can be manufactured with cross line lasers in one, two or three planes:

XY plane: Draws lines on the floor plane
XZ plane: Draws lines on the forward and backwall
YZ plane: Draws lines on the side walls

The light beam can span, for example, 90, 180 or 360 degrees of each of these planes, with small interruptions due to the posts that protect the glass housings around the lasers. A 360 degree laser level is sometimes confused with a rotary laser level.

Cross laser levels have largely replaced line laser levels. While line laser levels can be handy for things like hanging pictures, cross laser levels have a much wider range of uses, including painting and tiling. The most versatile type is the 3x360-degree cross laser levels, which draw horizontal and vertical lines on all walls.

Use

The illuminated line is reasonably straight, so that the line level can be used as a straightedge; for example, to see if a shelf is warped, even if not horizontal.

Function

The laser beam is fanned by a lens to produce a thin plane beam precisely horizontal or vertical, rather than a pinpoint beam. The axis of the laser is offset from the wall, so that a pinpoint beam would be parallel to and offset from the wall, and would not illuminate it; the fanned beam will intersect the wall, creating a precisely horizontal (or vertical) illuminated line along it.

Precision

The machine is set up using the built-in mechanical spirit level, plumb bob or electronic levelling, and the line along the surface is then guaranteed to be precisely horizontal or vertical to within a certain tolerance, specified either in millimetres per metre distance. A more advanced device may be accurate to within 0.3 mm/m; while lower-end models may be closer to 1.5 mm/m.

References

(2019-10-04). "En linjelaser får tingene i vater". Gjør Det Selv.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

construction-equipment construction-surveying laser-applications surveying-instruments woodworking-measuring-instruments

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