| 摘要 |
An electronic estimator has a clipboard size electronic touch screen. The contractor can draw on it, use it as a touch screen to select materials for a job, estimate costs including a running total of costs for a job, and input all client info. After initial contact by a potential customer, the contractor can input the client information including location and use a global positioning system (GPS) to travel to the client location. The contractor can use it to order materials for the job from the supplier.
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