Antique wooden metronome.
Size:Height: 9.5 inches;Base: 4.5 inches square.
Weight: 650g (allow 1.25 kg once packed).
Reasonable condition for its age - various marks & scratches, small chunk missing from base one side.
Not working properly - appears to be overwound but may be able to be fixed - I'm no expert on these things, I'm afraid, so no technical questions!