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An enginers level is usualy half a second thats 120th of a degree , put across the ways at each end of the bed to check and ajust for twist .
So -assuming that I would check the ways with a machinist level, what would be the accuracy needed here ?0.3 mm/m would tell 0.1 mm differences between the ways (they are about 15 cm apart). Is this accurate enough or do I need to go down to 0.01mm range in order to get any benefit of this procedure?
.......I think your missing a 0, I have a Moore and Wright that is 0.03m/metre, 0.3m/metre would be good for an ordinary level!Regards, Matthew
...I assume m/metre should be mm/metre?...
Quote from: mattinker on March 22, 2018, 05:05:15 AM.......I think your missing a 0, I have a Moore and Wright that is 0.03m/metre, 0.3m/metre would be good for an ordinary level!Regards, MatthewMatthew,I think you're missing more than the odd 0! I assume m/metre should be mm/metre? Yep, double typo!!Phil.