There are actually two versions of this little sucker out there that I have with my equipment.
The commonest is the one discussed, made of thin steel tubing that has been copper plated. A machined, threaded post is crimped into the bottom end to enable it to be attached to the Aerial Mounting No. 9, and a small, wooden dowel plug is actually placed into the top end, probably glued, to help keep the elements out. The whole thing is either painted green or brown. Over time, the wooden dowel plug can shrink and will either slide all the way down to the bottom of the tube before anyone notices. If they do notice, they often shake it out and toss it. If you have one that appears open ended, try gently tapping the open end on a table for a while and see if the dowel shows itself.
The second type I have is a solid steel rod, same O/D as the steel tube version and same length as the steel tube version overall. The bottom end is machined for the correct thread and the finish is a dull grey 'parkerized' look and feel.
David
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