MT Reference Card
MT Reference Card. One of a set of four 8 1/2″ X 11″ laminated reference cards listing commonly used formulas and general inspection data for the MT, PT, RT, and UT test methods. These cards help both the novice and experienced inspector by providing readily available, easily understood examples of testing techniques and sample calculations. Laminated for durability, these reference cards fit easily in a field inspector’s notebook or clipboard.