Occasionally stand, stoop, squat, and walk for extended periods of time; bend, kneel, or crouch to files or equipment stored at ground level; use hands and fingers to handle small parts, push buttons; and use hands, arms, legs and feet to climb ladders and stairs. Ability to operate hand tools such as screwdrivers, pliers, wrenches, pressure gauges, and precision instruments, as well as power tools such as pneumatic wrenches, lathes, welding equipment, jacks, and hoists.