"Gareth's Memory" wrote in message
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"Airy R. Bean" wrote in message
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Anybody know anything about the internal configuration
of these?

I bought one on behalf of my friend yesterday at Wimborne
to replace the 5/8ths one (not a colinear - misunderstanding)
that had been badly manufactured (q.v.)

I had one of those Diamond ones.Couldn't make it work.
Used the Aluminium for something else.
(if its the 5/8 over 5/8 you are taling about).