On Twitter, edy555 posted a link to an article for a NFC Reader antenna design using the NanoVNA and NanoVNA-Saver to increase measurement points. Although specifically written for the NanoVNA, most of the information can be directly applied to the NanoVNA-V2, especially considering Holger's NanoVNA-Saver mod for the V2.

https://www.nxp.com/docs/en/application-note/AN12810.pdf

- Herb