In article ,
R.H. wrote:
Please reply to this thread and ignore the other one, I forgot to add all
the groups in my first attempt.

Just posted some new photos:

http://puzzlephotos.blogspot.com/

308: Decorative hanger.

309: Doorstop

311: Tool for removing a flange without crushing pipe?

312: There's no mystery; the C.G. of each piece (plus that of those
above it) is above a solid part of the structure below.

313: Coping saw

314: Mechanical calculator.
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There's no such thing as a free lunch, but certain accounting practices can
result in a fully-depreciated one.