French to English Tech/Engineering Engineering (general) manufacturing generators

This is some kind of hand-operated bench tool; from the description, it is clearly being used to hold the rotating part (generator rotor being constructed) firmly between centres, in such a way that it can be turned with a handwheel and locked in various positions, so that work can be carried out on it; this is NOT a winding machine as such! It is obviously something rather like a small lathe, though with no drive or tooling, of course.

Here's how they mention it:

"Positionner les embouts de maintien sur l’axe du rotor et le placer dans l’entre pointe"

and later on, they go on to talk about the "contre-pointe", obviously the 'tailstock' of this device

The way it is talked about, this MAY be a specially-made device for this manufacturer, though I can imagine it would find application in all sorts of industries.

What I need to know is, first, if this is a standard tool, and has a usual name; and second, if not, can anyone suggest a good term to invent for it?