The Bently Nevada TK-3 Proximity System Test Kit calibrates monitors by simulating shaft vibration and position, ensuring accurate transducer inputs and readings. Its spindle micrometer and motor-driven wobble plate assemblies, with universal probe mounts, allow precise static and dynamic probe verification. Users record outputs with a multimeter, adjusting for desired mechanical vibration (50–254 μm / 2–10 mils peak-to-peak) without needing an oscilloscope, enabling reliable comparison of monitor readings to known signals.