Calculated Industries 6025 Scale Master Pro Digital Plan Measure Get fast, accurate linear, area and volume takeoffs from blueprints, drawings, and maps with the Scale Master It's ideal for contractors, landscapers, fencing specialists, plumbers, and anyone needing fast, accurate takeoffs from plans and blueprints Specifically designed to simplify takeoffs from architectural and engineering drawings 72 Built-in scales for more versatility, 39 imperial (feet-Inch) and 33 metric 6 Custom Scales, 3 each for imperial and metric units, lets you "roll" or define any scale from plans that have been reduced, enlarged, faxed or are otherwise out of scale Calculate area, volume, height, length, width for imperial and metric units Manual Count while rolling for studs, piers, outlets or other items. Subtract function to remove the last distance measured Includes 2 long-life 3-volt batteries, hard cover protective case, English User Guide, multi-language available on corporate website