The On-Screen Digitizer allows the user to import project drawing files of 14 different file types in the FastPIPE and FastDUCT estimating software. By having scale drawings within the programs, the user can do takeoffs directly on the computer. Scale information and a Description of each drawing can be applied to each drawing. (A custom scale feature can allow for determining the scale, if one dimension such as the distance between two column lines can be verified.) Once a plan is selected for takeoff, the user can zoom in and out and move around in a manner similar to Google Maps or other Internet map programs. Piping and duct systems on a project can be taken off and marked on the drawings simultaneously, directly on the screen, using the computer mouse. The plans are marked with transparent highlights in various colors to distinguish between different piping or duct systems. FastEST Inc.