Find your ring size.

Measure straight across the inside of your ring from inner edge to inner edge. Adjust the value below to match, then tap Get My Size.

Wrap a thin strip of paper or string snugly around the base of your finger where the ring will sit. Mark where it overlaps, measure that length in millimetres, then adjust below.

Place a standard Bank, Medicare, or Drivers ID card against the screen and tap + or − until the border sits right around the card edge. This calibrates your screen so measurements are accurate.

Place your ring finger flat between the two lines. Adjust until the lines sit tight against the inner edges of your finger at its base.

Place the ring flat on screen. Adjust until the circle lines up with the inner edge of your ring with no gap.