Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Nick's photos confirm what I thought. The Ebay one is missing not only the glass but the cover which holds it in place. Plank crimped those covers over what you see in the photo so they are very difficult to remove and replace. Would also be very lucky if an off-the-shelf glass fits. Plank also made this fitting as vertical sight glass--equally painful to deal with. But go for if you like it--maybe we can figure something out.