Printing machine operator (6)
I believe the answer is:
typist
This clue could be a double definition.
'printing machine' is the first definition.
The answer and definition can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'operator' is the second definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see an association between them that I don't see?
Can you help me to learn more?
(Other definitions for typist that I've seen before include "The old-style secretary, for one" , "Key worker" , "Pre-computer office worker" , "Forerunner of the word processor operator" , "Worker taken from pool, perhaps" .)