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An Augmented Reality Laser Level Line

Application Name: Laser Level

Description: Displays a horizontal level line, and optionally a vertical line, as an overlay in the camera view.

Publisher’s website: Black Dot Mobile

Cost: Free

Version/date reviewed: v.1.1  /  12-14-10

Phone/OS: Droid X / Android 2.2


Android Market link (mobile app only)
Android Market link (browser)

The Laser Level app displays a red horizontal line in your Android’s camera view, regardless of how the camera is tilted:


Here, the red line is perfectly horizontal; the “1.7” at lower left indicates that the camera is tilted 1.7 degrees from level. Tapping the “box” at lower right will bring up a green line on-screen that shows the camera orientation:


By tilting the camera until the green line lines up with the target object, you can measure the tilt angle of the target. The red line will always represent true horizontal.

In settings, you can adjust the picture transparency so that the lines are better highlighted, and you can also add a true vertical line to the display to make a “cross”:


You can move the red horizontal line or the “cross” to line up exactly with the object in the camera view by tapping and dragging it on-screen.

Other issues: The camera needs to be vertically-oriented for this to be accurate; you can’t tip it up or down. And it can be hard to get things to line up correctly when you’re holding the phone in your hands, as the image may not be steady enough for you to see how level the object is. Bracing yourself against a solid object, or using a tripod, can help with this.

Final thoughts: Bit tricky to use, and not sure how often it will come in necessary. But if you need to level a picture or other object, and don’t have a good level handy, this will do in a pinch.

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