Bubble Level: Spirit Level

Turn your phone into a precise bubble level. Lay it flat to level a shelf or a table, stand it on an edge to check a frame, a wall or a picture, and read the angle in large, clear numbers. SURFACE LEVEL (BULLSEYE) • Lay the phone flat: a round bubble vial shows which side is high • Total tilt in big numbers, plus the left-right and front-back angles • Rings at 1°, 5° and 10° so you can see how far off you are at a glance EDGE LEVEL AND ANGLE METER • Stand the phone on any edge: a tube vial and an angle dial appear • The numbers turn to read upright whichever edge is down • Measure slopes, roofs, stairs, ramps and anything that should be plumb MADE FOR REAL JOBS • Hold: freeze the reading, then pick the phone up to read it • Zero: save any angle as zero and measure the angle between two surfaces • Calibrate in two steps: measure, turn the phone half a turn, measure again. It removes your phone's own sensor offset, and the surface does not even have to be level • Units: degrees, percent grade, millimetres per metre and inches per foot • Chime and vibration when level, with a tolerance you choose (0.1° to 1°) • The screen stays on while you measure RULER AND PROTRACTOR • On-screen ruler in centimetres and inches, sized from your screen • Match a bank card to calibrate the ruler exactly • Protractor with two arms to measure the angle of small objects SIMPLE AND OFFLINE • Light and dark theme, available in 14 languages • Works offline, no account needed Tip: phone cases and camera bumps can tilt the phone. Calibrate on the surface you are using, or take the case off for the best accuracy.

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