Materials used;
Bronze, brass.
Optional tole shade with gallery.
Shown in Venetian gold leaf. Clients choice red on the shades.
In any size, finish and detail.

In each shade: two lamp holders directed down for good functional light on your work. 

This particular lamp in the main image is 120cm wide ( from shade to shade)  
Shade size 30/22/25H

Additional images of another variant with green shades. 95cm wide.
The scale study in added pics: two units over a 330cm long table