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DIY Concentricity gage

The Mechanic

Gunny Sergeant
Full Member
Minuteman
Sep 9, 2006
1,918
13
San Diego County Ca.
DSC01191_zps07c2718c.jpg

All it takes is a slab of steel, four hardened steel ball bearings and a piece of drill bit. Oh and your favorite mag base dial indicator.
 
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