First, we'll determine your screen’s dimensions. Then we can accurately measure your ring size.
Place your credit card on the screen according to the template above. Use the slider to adjust the box until the top and bottom match your card’s height.
Now, you’ll need a ring that fits you comfortably to measure your size. Start by placing the ring on your screen. Then adjust the on-screen ring size using either the slider or size buttons until you can't see any purple within the ring.
You’ll know you’ve adjusted correctly when you see only red inside the ring, and only purple on the outside. The highlighted button indicates your ring size.