What is the name of the tool on the table?

[pwsg07]

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I am curious what is the purpose of the tool.

 

[lambskin]

Looks like a camera with a viewing screen. The glass jarr behind it is a mystery unless it is used to protect the camera lense from getting dust as the camera may have huge magnification for the diamonds.

 

[kenny]

Another possibility is, in addition to the camera, it's a scale to measure very light things, like diamonds.
I've seen some scales for weighing gems that are so sensitive they come with a glass enclosure to prevent a breeze of wind from an AC/heating vent affecting the measurement.

But if that's what this is, it seems surprising they'd put a whole (relatively heavy) ring in it - so I'm not sure.

 

[pwsg07]

Thanks for the inputs. Now I believe it is a digital microscope. But I am not sure why they put it inside a glass case. I wonder what the model or the brand the tool is.