- Laser levels are tools that use a red laser light to project a straight line across indoor or outdoor surfaces. These laser lines can be angled, level horizontal or vertical plumb line depending upon the device's options. Use laser levels for any home or construction project where a straight guideline is needed, such as hanging cabinets, pictures or shelves. Laser levels can be purchased from hardware stores, large home improvement outlets, some department stores and a variety of tool shops online.
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Laser levels can be manual or auto-leveling. Manual levels use the same bubble balancing device that standard levels do, and require adjustment once they are placed on the wall or flat surface. Auto-levelers require little to no adjustment before automatically locating the exact level horizontal line, vertical plumb line, or perfect angle. Laser levels are also available as combination tools, such as the laser level/stud finder model.
Some laser levels only cast one line on one wall. These attach to the wall with suction cups, or with two pins that push into the drywall to hold it in place. The 360 degree laser levels project a continuous line onto all four walls of a room. These devices are typically round in design and sit in the center of the room on a tripod or level surface, or hang from the ceiling by a hook or strap.
The direction of the lines also varies with different laser level models. Some levels only provide the horizontal line, some can rotate to provide angled as well as vertical plumb lines. Higher end models offer horizontal lines and a perpendicular vertical line simultaneously.
Construction grade laser levels are typically used for outside projects like leveling concrete or deck surfaces. Since laser light is difficult to see outside, a receiver is necessary to detect the laser. The level projects the beam, and the receiver rod typically reacts with light flashes and audio cues to let the operator know when a level line has been created. -
For single or multiple pictures, shelves, rows of cabinets and chair rail, use a laser level to project a continuous line that assures everything will be hung at the same level. Unlike standard levels, laser levels can be used in tight spaces, and 360 degree laser levels can project lines around corners and bump-outs in the wall.
Laser levels save time by creating instantly one line to follow across an entire wall or room. Auto-levelers make the job even faster, and many models quickly readjust or turn off if the level is bumped or moved. -
Evaluate the needs of a job before purchasing a laser level. Decide if you need only horizontal or vertical lines, or if an angled line is necessary. Look for 360 degree models if you need to put up cabinets or chair rail on multiple walls. Choose laser levels that attach with suction cups or sit on tripods to avoid damage to drywall.
Check the range of the model before you buy. Weaker laser lights may fade out before reaching the end of the wall. The Engineering Supply website suggests checking the rotations per minute (RPM). Faster RPMs travel farther, but the light is dimmer. A slower RPM does not travel as far, but is bright and easy to see. Look for a slower RPM for inside projects, unless you're working in an enormous room where you need more range (see Resources). -
As with any laser tool, avoid looking directly into the laser. Do not aim the laser at reflective surfaces. The red beam on laser levels can cause temporary or permanent eye damage, including spots and blurred vision.
Check that the laser level is firmly attached to the wall or flat surface when in use. Falling laser levels could cause injury as well as damage to the level. Store your laser level in a protective case on a sturdy shelf to avoid scratching or breaking the lenses.
