Final mystery pic of this series. What is it? Hard to think that this one could have been a lathe guide, as the piece is not symmetrical around a central axis. I don't believe it could have been turned as is on a lathe. Clues? (If you're starting at this end of the sequence, go to the caption of [id=46542474] for my introductory comments and questions. If you're ending here, then thanks for staying with it!) Please post any comments, suggestions, or answers to the ICON list-serve: icon@insulators.com.

Thanks!