making a double pole single throw switch

[Brianc]

I've just realised that I left the last picture off the end of my original post. It shows the four units I made, two of which have disks supplied by Tony. I have also just received the springs that I ordered from "Coil Springs Direct"  http://www.albionspring.co.uk/ (no connection etc.). They have a huge selection of stock springs and are very willing to supply small quantities to private individuals.
Anyway, here's the final picture:

   

Cheers
Brian