Boy, this is a tough one, but I'm going to take a stab.

The original title proper against which later titles are benchmarked is:

Manufacturing engineer

The addition of IEE in front of the title is a minor change.  The addition of IET in front of the title would be a minor change.  As long as there is no reference to the corporate body elsewhere in the serial's entry (eg, uniform title qualifier, corporate body main entry), I would consider this a minor change.

And then there's the "In case of doubt, consider minor."

Steve Shadle/Serials Access Librarian  *****  shadle@u.washington.edu
University of Washington Libraries      ***     Phone: (206) 685-3983
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On Fri, 30 Jun 2006, Peter Hosking wrote:

> The Manufacturing engineer now has a different title but I'm unsure if
> this is a major or minor change. I've noticed that sn89013432 OCLC
> #19864213) has a variant title "Issues for <Mar./Apr. 2003> have title:
> IEE manufacturing engineer."    I'm guessing that "IEE manufacturing
> engineer" was considered to be a minor change.  The title has now become
> "The IET manufacturing engineer" with the April/May 2006 issue.  Could
> this latest change also be considered minor?
>
> The Manufacturing engineer was published by the Institution of
> Production Engineers. Since 1991 it has been issued by IEE, and now that
> IEE has changed its name, it is being issued by IET.
>
> Can someone guide me on this?
> Thank you
>
> Peter Hosking
> Serials Cataloguing Librarian
> Collection Services
> University of Canterbury Library
> Christchurch
> New Zealand
>