Physical Attributes: Bending at Waist, Carrying, Crouching, Feeling, Foot Controls, Handling, Hearing, Kneeling, Lifting, Mechanical Hazards, Noise and/or vibration, Other, Pulling, Pushing, Reaching, Seeing, Talking, Works Alone, Works Around Others. Learn to operate relay adjust-test stations to adjust electrical performance parameters by mechanically manipulating and tuning contact brackets, movable blades, contact gaps, pick-up/drop-out voltages, contact bounce and lag, contact pressures, and overtravel.