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Showing results for tags 'positional error'.
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Assuming the hairspring is sitting correctly in the regulator pins, is flat, correctly coiled and clean. The balance has been correctly lubed and pivots/jewels are all ok, and it is poised ok. The timegrapher is set correctly for lift angle, beat rate etc .I appreciate that the quality of the movement and lack of wear etc are important but assume that these are at acceptable levels. What effect will beat error have, if any, on the positional timing? Is there a target beat error range that should be aimed at for good positional error? Your esteemed comments would be much appreciated.