SHERWIN PSM-5 Penetrant System Monitor Panel | ||
A stainless steel panel, 0.090 inch thick and measuring 4x6 inches. A chrome-plated strip runs the length of one side of the panel. Five crack centers are evenly spaced in the chrome plating in order of magnitude; the largest is easily visible with low-sensitivity penetrants, while the smallest is difficult to observe even with high-sensitivity materials. | ||