520 mm to Inches on a Ruler
520 millimeters is equal to 20.5 inches on a ruler.
The place marked in red shows 20.5 inches, which is equal to 520 millimeters on the ruler.
Try these similar conversions:
521 mm to inches on a ruler
Convert 521 millimeters to inches and see it on a ruler.
519 mm to inches on a ruler
Convert 519 millimeters to inches and see it on a ruler.