Mystery wood turning tools

[minilathe22]

I bought a job lot of wood turning tools recently, and came across a few items that I cannot understand their purpose:

Any ideas? Long thin one as a very small screw thread on one end, a slight taper, and the square end looks like it would fit into a socket driver. Appears to have been manufactured as opposed to homemade.

The curved one appears to be made from a single piece of metal, and again has a small thread on the end. The round section looks like it was made round by hand with a file.

 

[Jonzjob]

Some more detailed photos would be handy Mini? those are a bit small and dark..

 

[toolsntat]

Hi there, could be wrong but the top one is possibly the arc for a set of dividers with built-in fine adjustment screw.
Bottom one isn't easy to see the details but the square indented end is similar to some ratchets and nut drivers for fitting sockets on to, as you say.
Cheers Andy