Video Centroid CNC Machine Tools at PRI Centroid demonstrates its CNC machine line at the 2014 PRI Show in Indianapolis. Advertisement ByEngine Builder on Nov 10, 2015 Click Here to Read MoreAdvertisement Advertisement In this article:Centroid, CNC Machines, PRI Show Video: Double Check Your Rod Bearing Clearance Video: 2022 Don Ridler Winner “SHO Bird” – ’31 Chevy with Twin-Turbo 509 W Series BBC Engine Video: How to Check Piston Ring End Gap Video: Creating the SML Cylinder Head – Part 3 Advertisement