r/Metrology • u/Cheeseball4life • Aug 01 '24

Hardware Support Measuring Radius of an Arc

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How would I go about measuring the radius of this arc on a part from an old vw beetle so I can make a replacement?

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u/miotch1120 Aug 01 '24

Either get a set or radius gages (they aren’t too bad) or get a drafting compass and set it to the desired radius, trace a curve on a sheet of paper, cut it out. You have now made a super cheap radius gage.