Tiny Technical

A lovely morning here in north Devon. Sue dropped in for a coffee, and a look in the workshop to see what interesting tech things she could find for today's challenge and I did the same. 

I am not sure, and I know steveng will put me right. I think the two items in the middle are either diodes, or resistors, and the outside are bridge rectifiers.

  My late husband was a radio ham, and never threw anything away, so I inherited a workshop/second garage full of all sorts of "stuff"
Just never seem to have the time to sort it!!!