Action: Use the Spirit Level, Slope, and Pitch

The measurement window between two cubes doubles as a spirit level and a slope gauge. Together they tell you whether a line is level, plumb, or on a grade, and how steep that grade is.

The spirit level

The LEVEL card shows a bubble in a tube, like a real level. It reads one of two ways, and the app picks which automatically:

  • Horizontal — for two cubes roughly side by side. The bubble drifts toward the higher cube. Centered means both cube centers are at the same height.
  • Vertical (plumb) — for two cubes stacked nearly straight up and down. The bubble then shows whether the line between them is truly vertical, like a plumb vial.

It switches to Vertical once the line comes within about 25 degrees of straight up. The bubble moves in proportion to the tilt and reaches the end of the tube at about 3 degrees off, so it is good for the last bit of leveling.

Slope and pitch

The bottom strip of the measurement window puts that tilt into numbers:

  • ANGLE — degrees above level (0° is level, 90° is straight up).
  • SLOPE — rise over run as a percent. Vertical shows ∞ %.
  • PITCH — the same steepness in three builder's forms:
    • metric — millimeters of rise per meter (mm/m),
    • decimal — feet per foot (ft/ft),
    • imperial — inches of rise per foot (in/ft), the classic "rise in run."

To check if something is level

  1. Place a cube's center at each end of the thing you are leveling (two top corners of a picture, two ends of a shelf).
  2. Read the Horizontal level: center the bubble, and confirm ANGLE reads near 0.000°.
  3. Adjust the real object and watch the readings update live.

See How To - Level a Picture.

To measure a grade or ramp

  1. Place a cube's center at the bottom of the slope and another at the top.
  2. Read SLOPE for the percent grade, or PITCH (imperial) for inches per foot.
  3. Compare against your target (for example, an accessible ramp's maximum grade).

See How To - Assess a Handicap Ramp.

Tip

For big tilts, trust ANGLE and SLOPE rather than the bubble — the bubble is built to be most sensitive in the last few degrees.