Just gave that a go, worked a treat. I knew there was a simple answer!
Many thanks St0rmer66.
Now onto my other problem, will start a new topic for that though.
Hello,
First time poster, many time reader.
I'm installing a new shower, concealed thermostatic variety. I have a brass wall mounted elbow with a female 1/2 inch thread into which the shower arm screws.
Looks like one of these...