Pitch
0.0°
Roll
0.0°
Angle A → B
—
Hold still on each surface, then tap A and B. Phone sensors are good to roughly ±1°.
Digital
1.0×
Drag up / down to zoom · left / right for brightness
or hold Dig / Opt / Brt to fine-tune · double-tap to reset
or hold Dig / Opt / Brt to fine-tune · double-tap to reset