Use any standard bank card from your wallet as a size reference. Use the
Thumb method to hold it flat against the gravestone while keeping
all four rounded corners visible.
IMPORTANT: Use 1× zoom when taking the photo.
Do not use ultra-wide, telephoto, or digital zoom.
Real example
Thumb method
Press the card flat with your thumb
Place the card beside the lettering and press it firmly against the gravestone with the pad of your thumb.
Keep the rest of your hand beside or behind the card.
Do not cover any of the card’s four corners.
Before taking the photo, check that the card is flat and every corner is clearly visible.
Good examples
What your photo should look like
CorrectThumb only, corners clear
CorrectCard flat beside lettering
CorrectCamera square to the stone
CorrectCard and lettering in one plane
CorrectReadable natural light
CorrectEven exposure on dark stone
What to avoid
Photos that make measurement unreliable
IncorrectFingers cover corners
IncorrectHand covers the card
IncorrectCamera too slanted
IncorrectHard shadow across stone
New measurement
Start with one clear photo
Include the memorial, the lettering, and a standard bank card with all four corners visible.