21.5 mm to Inches on a Ruler
21.5 millimeters is equal to 0.8 inches on a ruler.
The place marked in red shows 0.8 inches, which is equal to 21.5 millimeters on the ruler.
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22.5 mm to inches on a ruler
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20.5 mm to inches on a ruler
Convert 20.5 millimeters to inches and see it on a ruler.