computing and measuring equipment and parts thereof; namely, hand-held computers, laptop computers and desktop and mainframe computers, computer software, and laser pointing and coordinate measuring instruments, all for use in the planning, design, engineering, fabrication and installation of pipes, pipefittings, and pipeline routes and networks

machine tools; namely, excavation equipment, welding equipment, positioning equipment, bending equipment, and cutting equipment for use in the fabrication and installation of pipeline routes and networks