jig for making uniform footrope stirrups

[Lost and Confused]

I once saw a page with a jig for making stirrups for footropes in a uniform manner. I have always just "winged it". Can do better. Could someone point me in the right direction? Thanks for any help!! 

[Gregory]

I'm looking for a jig, but meanwhile, if you make the stirrups in a uniform manner, all else falls into place..

Here is a search for "stirrups"..

 

Here are a couple of examples.