In the image, Elias was looking at a laptop screen. And on that screen was the image of the room.
You can find digital versions of various treatises and instructional books related to this science on these platforms: Overview of Al-Jafr Manuscript | PDF | Shia Islam - Scribd Kitab Al-jafr Pdf
, it is important to distinguish between the legendary original and modern scholarly works: The "Lost" Original: In the image, Elias was looking at a laptop screen