In an earlier contribution to this discussion,
Mike wrote:

Is there a standard interval between studding on a plasterboard wall ?
should I be able to find the first studding by measuring out from an
exterior wall ?

ta

They're often (but not always) on 18" centres to fit 6' x 3' plasterboard
sheets. The end gaps may be different if the total length isn't an integral
multiple of the general interval - and there's no way of knowing which were
the start and finish ends.

You can get a stud finder for a few quid which makes a reasonable job of
finding the studs. It's a lot better than trying to second guess where they
might be!
--
Cheers,
Set Square
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