They called it a test point because that was the safe, clinical language engineers preferred. In practice it was a diagnostic crossroad: a physical tap within a larger control system where signals could be probed, measurements taken, and hypotheses proved or disproved. The KMGD label traced the circuit diagram in thin black ink, anchored at the convergence of supply rails and sensor feedback loops. On paper it was neat and unremarkable; under the field lights it became a translator between theory and reality.