Units and Precision

The app stores everything in meters and radians, then shows it in friendlier units. This page explains what units appear where, and how numbers are rounded, so you know how much to trust a reading.

Distance units

The measurement window shows every distance three ways at once:

  • Metric — centimeters under 1 meter, meters at 1 meter and above, both to three decimals (for example, 23.400 cm or 1.234 m).
  • Decimal Imperial — inches under 1 foot, feet as a decimal at 1 foot and above, to three decimals (for example, 9.200 in or 3.420 ft).
  • Fractional Imperial — feet and inches with a fraction rounded to the nearest 1/64 inch, the way a machinist's rule reads (for example, 3' 5 1/2"). Fractions are reduced, so you see 1/2" rather than 32/64".

Position units

  • On a cube window, the live Location row is in meters, to three decimals.
  • The TXT export lists each cube's location four ways: meters, centimeters, feet, and inches.

Angle units

  • Degrees appear on the angle window, in the measurement window's ANGLE field, and in the cube window's Euler row (to three decimals, like 12.500°).
  • Radians appear on the angle window (under the degrees) and in the TXT export.

Slope and pitch units

  • Slope is a percent (rise over run × 100). A perfectly vertical line has no run, so its slope shows as ∞ %.
  • Pitch appears three ways: mm/m (metric), ft/ft (decimal), and in/ft with a fraction to the nearest 1/64 (imperial). A vertical line shows pitch as ∞.

How precise is it, really?

Those three decimals come from the app's math, not from how accurately you placed the cubes. Real accuracy depends on how carefully you position each cube by hand and how well Vision Pro is tracking your immersive space. For tight work:

  • Show the pivot point and line its center up with the exact feature.
  • Get close and place slowly; a pinch‑drag moves the cube by how far your hand moves.
  • Check from multiple angles.

The spirit level's range

The bubble moves in proportion to the tilt and reaches the end of the tube at about 3 degrees off. So it is a fine indicator for the last few degrees of leveling; for larger tilts, read ANGLE or SLOPE instead.

When the level flips to Vertical

The level reads Horizontal for cubes roughly side by side, and switches to Vertical (plumb) once the line between them comes within about 25 degrees of straight up and down.