On Sat, 31 Aug 2013 10:15:08 GMT, lid (AnthonyL)
wrote:


It works to a point but the beginning and the end of the blur are hard
to determine. I get around 3,400 rpm at low speed which could well be
3,000 rpm. I like the idea of having a laser tacho (not sure why, I
just like the idea) as suggested by F Murtz so I've ordered one from
amazon.uk at less than a tenner.


.... but not fully concentrating I've just realised it is coming from
China!

--
AnthonyL