Troughton & Sims Transit
This was missing the lens. Apparently it had been damaged, as the cell was badly bent. The threads for the micrometer were also gone. I obtained some of the lenses from Al Wood's estate, and there was a lens in there that was exactly the size and focal length I needed. I made a new cell and installed threads.
I made the new cell to fit the old lens cap
Interior of new cell, showing lens
New webs I installed
Leveling bolts I made to replace missing ones
Overall, finished
Making the new cell
As I got it