Step 1 - take a credit Card
Get a Credit, Debit or Loyalty card.
Step 2 - Stand in front of a mirror
Hold the card steady and align one edge with the centre of your nose.
Step 3 - Check the card position
The size is determined based on where the opposite edge of the card aligns with your eye.
A - Average
If the card’s edge aligns with the outer corner of your eye.
B - Wide
If the card’s edge falls between the outer corner and the centre of your eye.
C - Narrow
If the card’s edge extends past the outer corner of your eye.