What did someone working as an ^Aero automatic hand^ do?

Thank you Devorgilla and PaynesGrey.
For some reason, I just couldn't get my head around it, but your input has helped.

If you search The 1939 Register for Shardlow on keywords aero automatic you get all sorts of job descriptions in the local aeroplane industry which include the word automatic e.g:

Draughtsman Automatic Aero Engine Dealer

Automatic Tool Setter Aero

Engineer Automatic Machine Setter (Aero Engine)

Waffler (Automatic Fettler) Aero Parts

Automatic Lathe Hand Turner (Steel) Aero Works

Automatic Turner Rolls Royce Aero Works

I think it’s being used as a term for anything that is done by machine as opposed to purely by hand.

Dictionary definitions of automatic include:

Of a machine, appliance, etc.: that does not require an operator; that works by itself under fixed conditions, with little or no direct human control. Hence of a process: based on or utilizing such devices. (Now the usual sense.)

There is no division of labour which has benefited more by the introduction of automatic machinery than that of the drilling and boring of metal - J. Yeats, Technical History of Commerce

I think your man was a general factory hand.

I googled Aero automatic hand wartime occupation and got some info on it. It's to do with aircraft. Quite lengthy but easy to find if you use my wording.