Rest the glasses on a known-flat surface, hold still, then set zero. The current tilt becomes your new level reference.

Spirit Level turns the glasses' orientation sensor into a precision bubble level. Tilt the device and the bubble drifts toward the high side — center it to find true level.

• Bullseye — surface level, both axes at once
• Horizontal — side-to-side roll, like a beam
• Vertical — pitch, for plumb checks

If no motion sensor is available, the level runs a gentle demo so you can preview the display.