My first post of new work in a while. This is a 3B28 half-wave gas rectifier. Most interesting for me, is the screw near the bottom inside the glass. When I had it outside, alot of light reflected around the bottom of the tube, and getting detail of the screw while preserving the reflections was an interesting challenge. This is also the first scan with my new scanner, and could be better. Think of it as the test drive. (The scanner is great by the way. I just have to learn to use it well.)