Need help identifying door hinge manufacturer

Hi all,

The hinge in question is aluminium in construction and is also fitted to an aluminum external door, the hinge is adjusted by removing a plastic cap from the top of the hinge and adjusted back and forth with a large allen key. The cap has an R logo on top with the rear of the R consisting of two forty five degree triangles.

Dorma can't help and neither can any other hardware specialist I have bored with this, any ideas?

 

I would have loved to post a picture but my phone is mocking me by dissolving the picture as I click on it and then not letting me go to pictures as I try to upload and my tablet is saying the picture is to large for the servers to upload despite the fact it is only 3.06mb. There is only so much technical misery one man can take in one day, I was hoping that some bright spark out there would remember this logo due to the fact that it appears rarer than rocking horse ****.