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Before printing, make sure that the page scaling is 'None' in your print options.
Make sure you are printing in a standard A4 size paper.
1. Print this page and compare the below printed scale with a real one.
2. The scales comparisons is a must.
3. Place an existing ring above the scale and note the inner diameter in mm.
4. Use the ring size in mm against the preferred column on the next page. For eg. If the inner diameter is 19.1mm then the ring size is 20.
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