FAQ

What if I used my credit card as a reference rectangle? Do I have to worry and immediately block my credit card

NO, NO, NO, NO, NO and NO

What am I measuring?

You are measuring the lengths of the objects in the 2D plane of the reference rectangle with a size of a credit card.

Why VisualRuler does not compute height of buildings?

VisualRuler measures only sizes in the 2D plane of the reference card.