An unidentified techno-nerd decided to make a souped up version of the Mark VII E-Meter. Known as the "Mark X", we're not sure what it does or how it works. Probably pretty much the same as any other model.
Wikipedia cite:
{{cite news | author = Former Scientologist Magazine | title = The "Mark X" E-Meter | url = https://www.youtube.com/watch?v=1DpRjIZVwms | work = YouTube | date = February 6, 2018 | accessdate = February 7, 2018 }}
The "Mark X" E-Meter February 6, 2018,
The "Mark X" E-Meter February 6, 2018,