http://www.lightstraw.co.uk/gpo/clocksystems/index.html

I knocked this up. Currently the Mark III version, it has proved to be invaluable.

It's a PDF laid out in the GPO engineering instructions format as is the rest of the clock site which it will be loaded into shortly. 

Text I forgot, " The supporting screw is adjustable as not all clocks have their hanging brackets quite flush with the wall". Will ammend in a future update but rushing this out to gauge opinion on the stand

I hope some of you find this useful. 

Simon GPO Clocks

http://www.lightstraw.co.uk/gpo/clocksystems/index.html