Gas utility uses PC technology to replace microfilm map systems. C. Legg. Pipeline Gas Ind., July 1998, 81(7), 67--71.

The development of laptop computers for mapping, maintenance recording, and communicating between office and field personnel is described. Prototype models are mounted in field vehicles. The main findings are summarized and laptops are preferred to other possible methods of data reading. Details of a pilot evaluation are given and effects of temperature, vibration, moisture, sunlight, dust, and security are discussed. Future developments are reviewed. Current construction and maintenance plans for laptops include printing, red lining, trace software, software releases, procedures, and work management. These aspects are discussed.

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