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The SON ERD Measuring Tool, the only tool you need to help measure crucial rim dimensions for bicycle wheelbuilding.
£85.00
From the same folk who bought you the legendary SON Nabendynamo rage comes their ‘SpeichenR echner’ or…nippleseat diameter gauge; the quick, simple and clear way to help YOU measure Effective Rim Diameter. Used in the RBW workshop day in day out it’s my go to tool for the job.
Find out more on RBW’s Youtube channel in ‘The ONLY way to measure ERD‘!
