They are still made in CA
6 degrees of angle.
The name of the company is stamped on them. The company is still around. I have a note burried here somewhere.
Also Garhauer will make them for you. The key is the Angle.
Also if you are in a pinch I have about 8 or so of them that I could sell you. They are used, need a little polish, but are from a great lakes boat so are fresh water usage only.
Let me know any of the ways above.
Guy