This is a new program for 3D editing of digital terrain models (DTMs) by Carlson Software. Precision 3D is a software with an array of tools to locate and correct DTM errors in a sharp, 3D interface. Surveyors, contractors and engineers alike can use the software to make sure the final DTM surface is of the highest quality. Editing tools include surface blending, spike and dimple removal, DTM vertex editing, and surface pad placement by defined polygon and outslope conditions. Multiple undo and redo commands allow you to study changes to perfect your project.