Step 1: Place a known object (like a ruler, credit card, or A4 paper) in the camera view.
Step 2: Tap two points on the object to mark a known distance.
Step 3: Enter the actual distance below.
š” Quick Reference Sizes:
ā¢ Credit Card: 8.5cm (3.37in)
ā¢ A4 Paper: 21cm or 29.7cm
ā¢ US Letter: 8.5in or 11in
ā¢ Standard Ruler: 30cm (12in)