How to Measure Manchu/Cylindrical Rings

Cylindrical Rings need the most accurate size to work.

You must use a caliper (preferably digital caliper) and take the width to the nearest 0.01mm at the widest point of the thumb. If you use a non digital caliper, please check here and learn how to read it:

Measure three times, first a loose measure just lightly touching the skin, and a tight measure pressing against the bone that it even hurts a little. Last, take the length of the proximal phalanges of the thumb.

For example, this tight width reads 21.0mm
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This loose width reads 21.8mm
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Lastly take the length and  it is 22mm

Lipped Rings

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微信图片_20180418154241

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微信图片_20180418154245

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微信图片_20180418154253

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微信图片_20180418154241

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 How to Measure other Rings

 

Measure the thumb's accurate circumference at the first joint below the finger tip.