It weighs 900 kilograms and it is the reason the Paris workshop is on the ground floor.
What it does
Rolls cast ingots down to sheet and wire. Everything we make starts as a bar and passes through it, some of it twenty times with an anneal between each pass.
Why keep it
Because it is better. A modern mill is faster and its rollers are ground to a tolerance this one cannot match — and this one has a feel through the handle that tells you when the metal is work-hardening, which no readout does.