If you build or design things you know the importance of working with accurate dimensions. The most frustrating and costly construction headaches can usually be traced to dimensional errors. The Sonin DT110 InchMate+ Construction Calculator is for people who work with dimensions. The simple measurements (Foot - Inch - Fraction, or fif) you make with rulers or tape measures become difficult and tedious when you try to add and subtract them, let alone multiply and divide. The InchMate+ calculates these dimensions automatically. It was designed to be incredibly easy to use. It has a patented "self-prompting" system leading through the process of entering fif dimensions, and accepts inputs of to 1/16" - the practical limit of accuracy for common building and design projects.
From the Manufacturer
This unique foot/inch/fraction calculator will automatically solve rise, run diagonal, and slope of any triangle. These powerful triangle functions make this calculator a must for anyone dealing with roof rafters, foundation layout, and squaring up angles, walls, and floor plans. It converts easily between feet, inches, and fractions; inches and fractions; decimal feet; and meters. It has a handy auto-off feature and comes with a long-lasting lithium battery and instruction manual. One-year limited warranty.