Guide to Size Classes

Guide to Size Classes

 

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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