Years later, Arjun returned to the lab with a battered copy of Engineering Metrology. He donated a set of ruggedized calipers and a 3D-printed fixture that let village technicians calibrate sensors with a telephone-battery-powered motor. The lab students argued about whether metrology was esoteric minutiae or the backbone of every reliable machine. Arjun smiled and told them the same thing Professor Rao had told him: “We measure because things break. We measure so they break less.”
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A file transfer started. No pop-ups. No viruses. Just 800 pages of pure, high-resolution metrology gold. Years later, Arjun returned to the lab with