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Homemade ERD Measuring Tool


BUILDER:
reddog3 on bikeforums.net
DESCRIPTION:
Homemade tool for measuring a bicycle wheel's effective rim diameter (ERD). Fashioned from a pair of spokes and a machinist's scale, it is utilized to aid in spoke length calculations during wheel building operations.
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Nov 29, 2013 12:55 PM
daveward
You learn something new every day.  Who knew about the ERD?
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DIY ERD Measuring Tool - comment on how to build a ERD Measuring Tool - 1 comments
daveward says:
Nov 29, 2013 12:55 PM
You learn something new every day.  Who knew about the ERD?

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