**4. Brief Overview of the Contributions to This Special Issue**

The analysis of the topics (Table 3) identifies or summarizes the research undertaken. This section classifies the manuscripts according to the topics proposed in the Special Issue. It was observed that five topics dominated the others: industrial heritage; geometric modeling; computer-aided design; computer-aided engineering; and historical technical heritage.



**Acknowledgments:** I would like to thank all authors, the many dedicated referees, the editorial team of *Applied Sciences*, and especially Xiaoyan Chen (Managing Editor) for their valuable contributions, making this special issue a success.

**Conflicts of Interest:** The author declare no conflict of interest.
