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DavidA:The cross slide on my Sieg C3 which is metric is marked 0.025 mm per division. It is also marked 0.001" which are obviously not equal. I suspect DaveIOM is correct, it is a 2.5 mm pitch leadscrew thread. Treat it as 2.5 mm per turn.Gary
Just found out that I have a mixture of metric and imperial dials and feed screws on my carriage so at the moment I haven't a chance in hell of sorting it out without spending more money.
I did find out that my feed screws and dial for 1 rotation move tool 2mm metric / 1/8 imp. Tested mine and its already been converted apart from the top dial is imperial. So it's turned out a cheap fix.Why is my coolant rusting my bed ? That's the next topic !!! lol
Trebor is the compound slide also 2mm pitch? If it is, for now all you have to do is put some masking tape around the dial and double all the numbers with a felt pen.