Simplicity Pieced Double Wedding Ring Template
http://www.nancysnotions.com/product/simpli+ez+double+wedding+ring+template.do
Also, here is one where the 3-in-1 template for the inside, melon & square are separated into 3 different templates. Of course, you pay more than twice the price to get the separate templates, but in case you're interested in that, here's a link:
http://vfwquilts.com/products/double...g-template-set