Measuring Tolerances

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Sorry, Mick ... I really don't understand the relevance of that comment.

Even if, as we can reasonably assume these days, M&W contract-out the work; M&W is, so far as I am aware, still considered to be the "Manufacturer".

MichaelG.

I remember getting the new design M&W design combination set around the late 80s and the inspection department rejected it for tolerance, not fit for purpose. At that time I'm not sure if it was manufactured in the UK, I now have one of these combination sets and has been inspected and fit for use, again if made in the UK, purchased around 1993.

Pretty certain all Moore and Wright is now produced in a Chinese factory with no production remaining in UK. Is this progress or a retrograde step brought about by the Accountants.

Dave

What do you consider to be a tight tolerence? What talking about indicators, are you also talking about micrometers, and digital calipers as well? Or are you jst talking about diat test indiactors? With dial test indicators, the rigidity of the stand holding the indicator can have an effect on the value that you are able to measure. The smaller the units you are measuring the more difficult the task of measuring becomes. If you are talking about 0.01mm , that is very easy to measure compared to 0.001mm or 0.0005mm. Sometimes , when working to very tight tolerences, specific gauging is often made, to be able to compare these part sizes. Particular when you are making parts where the size to be acheived needs to be less than 0.001mm. In the home shop, making round things, is achieveable to 0.001mm but not when milling.

Well I have learnt to hang back a little before jumping in so some people have the chance to leave a reply.

Thank you and some of the replies have indeed helped me to understand and have given the answer to my question

Again many thanks

Gary