Formed Metal Plate MT & PT Exam Flaw Specimen (Inch Version) CS Formed Metal Plate Magnetic Particle and Liquid Penetrant Exam flawed specimens. Geometry: 0.25" x 4" Plate. Flaws: 3, randomly placed Standard Tolerance: +/-0.150" (4mm). Documentation: NDT Verification Reports, C of C, CAD Drawings and Test Sheets. Material: Carbon Steel. Customized Calibration Test Block and Flaw Specimen also available.