I did a quick clean for hopeful identification. Anybody?
This looks to be more like copper than brass. I have found some other copper, the OTA end ring are turned copper. Copper, brass, or bronze is a fine line and I don't profess to be an expert for definitive identification. I'm open to suggestions that don't damage anything. The three inner round dots are hole filled in with a soft metal like lead or Babbitt.
The hours go from 0 to 6 on each side. This matches the R.A. shaft having a stop built into the removed collar. The stop keeps the shaft from rotating past horizontal. It is limited close to 180o of travel, requiring a meridian flip to be done promptly. I intent to extend the range for a longer meridian overlap.
Edited by apfever, 10 April 2021 - 09:10 PM.