It was the composing room of one of the town's two newspapers, the small one.
Here are two ways of describing the system in the context of introducing women to the composing room.
Childs was closely involved in all operations of the paper, from the press room to the composing room.
"He read copy, wrote headlines and went down to the composing room."
The top floor was designated for use by the composing room to allow the printers access to more natural light.
He had a good deal to say in his office; and even more to say in the composing room.
If I'd just sent the letter down to the composing room as was, we would have had a strike on our hands.
Some Post guild members had family members in the composing room.
After working all day in the composing room he would cover municipal meetings at night.
The copy then goes to the composing room.