(James Hanley) wrote in
m:

Where in the uk can I order a steel scale to measure my screws
accurately from below the head?
like this one http://tinyurl.com/6lgmj

like this one... http://www.tool-up.co.uk/shop/diy/FIS106.html

Loadsa places, including high street tool shops

How would I go about cutting screws to make them shorter, would a saw
ruin the screw?

Put a nut on the screw (I presume a better word is "bolt"}

Saw it; tidy it up with a file, screw the nut off to reform the thread.

what screw is best for screwing into steel? alu, brass, steel? It'd
be good if the screw didn't conduct electricity.

Any insulating bolt is so much weaker than steel it doesn't matter,
otherwise, surely steel?

mike