Here’s a quick conversion guide for common measurements:
- 1 inch = 25mm
- 1/2 inch = 13mm
- 1/4 inch = 6.5mm
If you’re not familiar with millimeter measurements and don’t have a ruler, then, Keep the Change…handy:
- 1 quarter= 24.2 mm
- 1 dime= 18mm
- Both coins side by side = 42mm
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