Used to determine the planeness (flatness) of testing machine platens, capping fixtures and other testing accessories. Contents: 6″ Long Precision Ground Parallel Bar, Feeler Gauge Set That Includes the Following Sizes: .002″/0.05 mm, .004″/0.10 mm, .005″/0.13 mm, .006″/0.15 mm, .008″/0.20 mm, .011″/0.28 mm, .012″/0.30 mm, .013″/0.33 mm, .016″/0.40 mm, .018″/0.45 mm, .022″/0.50 mm, .022″/0.55 mm, .025″/0.63 mm- 0.001/12″ Feeler Gauge, Plastic Case with Dividers