Working conditions include exposure to weather, odor, noise, chemical hazards, gases and dust, standing for prolonged periods of time, walking up and down several flights of stairs, climbing and descending ladders, working at heights, and working in tight or confined spaces. Precision and exotic test equipment, diagnostic equipment including digital multimeters, oscilloscopes and signal generators, analog and digital calibration equipment, office equipment, two- way radio, pickup truck, power tools, construction materials, and office equipment.