Posting from Rec.crafts.metalworking as always:
2107) Looks like the reinforced backing for a medium size
highway sign. The backing is needed to keep it from bending
in a strong wind.
2108) I don't see the fittings which I would expect, but this looks
like some form of condenser -- with the outer jacket containing
chilled water and the inner condensing vapor on the inside and
dripping down into some kind of receptacle.
2109) Perhaps designed to dispense some kind of gooey substance,
glue -- caulking compound, or something similar.
If it were smaller, I would suggest for applying decorative
icing to a cake.
*or* -- it could be a filter cartridge for something like a
2110) Perhaps for winding a spiral spring?
2111) Looks like it is intended for pulling nails or staples.
2112) Lubricator for dispensing a known amount of (oil or grease) to a
Now to see what others have suggested.
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