Looking at the section thru the well tank (fig 9) it looks like the note should be 1/2" x 1/2" angle by about 8 1/2" long.
I am not a regular subscriber to the mag, but did buy the issues with the intro to this series that were published last year. I thought the latest issue was just carrying on from that intro, but note in the index that there were articles in recent weeks which I have not got. Can somebody tell me what is in the 2015 articles as the current article looks like it carries on from the 2014 intro.
Edited By Roger L on 28/06/2015 10:52:21