Ability to walk, stand, sit, kneel, push, stoop, crawl, twist, reach above the shoulder, grasp, pull, bend repeatedly, climb stairs and ladders, identify colors, hear with aid, see, write, count, read, speak, lift and carry up to 50 lbs., perceive depth, operate a motor vehicle and operate motor equipment. Equipment (machines, tools, devices) used in performing the essential job function include but not limited to computer and related equipment, calculator, special instrumentation, hand tools, power tools, air tools, telephone, and automobile.