Practical how-to guides for common leveling tasks — all using your phone's built-in sensors instead of a traditional spirit level.
Step-by-step guide to getting your frames level every time — measure before you drill, adjust after hanging, and use your phone to verify the result.
Read guide →Wall-mounted TVs look great only when they're straight. Learn how to check your mount before drilling and fine-tune the TV after it's hung.
Read guide →An unlevel pool table ruins every shot. Find out how to check the slate, adjust the legs, and verify the table is flat using your phone as a precision level.
Read guide →Your phone has a built-in accelerometer that works just like a traditional bubble level. Learn how it works, what it can and can't do, and how to get the most accurate readings.
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