On the Guild forum, Technical committee member, Nick Dunhill is chronicling his latest superb builds of a pair of NER W Class Tank Engines (LNER A6) He has reached the point of detailing the 'backheads' and I was really taken with the way that he had modified the gauge glass castings. by nick dunhill, on Flickr by nick dunhill, on Flickr by nick dunhill, on Flickr by nick dunhill, on Flickr All images copyright Nick Dunhill and posted here with his kind permission. After an enquiry as to where he got the 2mm square perspex rod, Nick very kindly sent me a piece but warned that his supplier had gone out of business and that his stock was dwindling after giving a few pieces away. This prompted me to do a bit of searching until I found some. Sadly like many things for sale online, although the base item wasn't that expensive, the fixed postage was a killer. So I ended up buying 11 meters of the stuff to make it more cost effective. It still worked out at £1 per length (500mm) but I didn't think that too out of the way. Should anyone have a need/desire for some, I will be happy to bring some along to Guild shows next year for you at £1 a length. Just let me know nearer the time