| Thats funny the sight glass fitted at an angle across the back of the boiler looks just the same as the sketch on the back of my envelope here!
I think it'll be considerably easier to just solder on the threaded bushes and use steam fittings rather than cobble up some nasty looking bits of old tube!
Where do you buy those little steam fittings? And can the sight glass be purchased in various lengths and is the glass 5mm diameter?
Lots of questions!
Alan
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