New cheap touch probe of fleabay

[Jonathan]

Aw bollocks to it, it's only 140 quid, I just bought one

Only!

It will be interesting to see how it compares to a homemade one. They mention about using different metals for the contacts to stop carbonising. I wonder if the contacts are gold plated, or if there's more to it than that. If so then I'm sure one could find some gold plated connectors to use as contacts to make one.