Episode 8 of ChatNAPT with A.I. Chatterbots Chuck & Howie features metrology legend Christopher Grachanen, whose decades-long career spans the U.S. Air Force, NASA, Compaq, and National Instruments. A pioneer in the field, Chris developed the original free Uncertainty Calculator and other widely used tools that transformed calibration labs around the world. He shares stories of innovation, leadership, and his role in launching NAPT, along with surprising passions like playing in bands and hunting for diamonds. Tune in for an inspiring blend of technical insight, industry history, and personal stories from one of metrology’s most influential figures.