CONSTRUCTION MASTER PRO Desktop: This calcualtor features extra-large display and tilt head for office use. Works in and converts between all building dimensional formats. Solves right angles including rafters, rake-walls, slopes and square-ups. Stair layout calculations. Complete circle solutions. Full trigonometric functions. DMS conversions. Areas and volumes. Calculates footing volume, blocks, roof area, board feet, material cost/estimation problems and more. Includes easy-to-follow user’s guide, CD-ROM with English and Spanish “How-To” CD and user guides, long-life battery and full one year warranty. Shipping Dimensions: 11 X 8.5 X 2 inches. Shipping Weight: 1.540 lbs.