Thank you for the valuable information Mr. Kiriakos.
For electronics enthusiasts and DMMs, it represents a page of history long after.
You are welcome !

With a bit of further detailed document analysis, I am now convinced, the editor in use this is
MS PowerPoint.
Then it was converted to PDF.
At page 4, there is an almost unreadable sentence, due fonts type incompatibility.
By copy and paste as plain text, it did appear the sentence :
Dual display - improves troubleshooting capability and efficiency This document has a target group electronics engineers working at R&D facilities.