Looking back to the first sample, there were some nicks and what appear to be marks from a vice used in construction of the ring. The rings of the new sample are vice-mark free and the finnish is much is much finer. Engraving on bridge of first sample. The engraving on the bridge of the first sample is deeper and the brass is better finished but the engraver has left visible pits. The engraving on the new sample is much better.
Right angle stops on first sample.
This fault is found on both samples of the ring dial. This problem appears to be caused by the way the holes for the right-angle stop attachment screws are laid out. It seems that marks for where these holes should be drilled are laid as part of the overall machine engraving process without regard to the actual fit of the pieces. The error is consistent between both samples, so one might assume that the offset could be corrected in the engraving process or one could simply open the dial to 90 degrees, place the right-angle fitting against the rings and make a pencil or awl mark where the holes fall. While it is strictly a functional dial without any decorative engraving, it is still elegant.