How can a tolerance be applied to a single point in space?
-Plastic injection molded part
-Mold built to 3D data with 0.006 shrink factor
-test/cmm fixture built to gage points on part
-part print came many months later with table showing car body position xyz points to measure with +/-...
Check out process-cooling.com or use the link below that will get you directly to "How to Protect Open, Recirculating Cooling Systems"
http://www.process-cooling.com/CDA/ArticleInformation/features/BNP__Features__Item/0,3674,63320,00.html