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Product Description
I refined the dimensions of the manchu thumb ring for my own thumb.
Medium size should measure 20 mm tall and have inner elliptical dimensions of 20 x 19 mm. The height of the ring should be slightly less than the distance between the thumb joint and the line running at the base of the thumb.
If your thumb is slightly too big, you can order this ring, and file out the inside to get a better fit.
This design should be able to draw quite heavy bows with a straight pull.
Instructions for how to use these types of rings can be found here:http://mandarinmansion.com/articles/Using%20Manchu%20thumbrings%20Peter%20Dekker.pdf
Remember to keep this ring over the joint of the thumb when using it for archery!
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