Desktop version. Computes feet, inch, and fraction with trigonomeric functions. Essential tool for serious building professionals, contractors, and architects. Used for projecting, ranging from design and engineering to estimating and bidding. Adds, subtracts, multiplies, and divides in feet and inch fractions, decimal feet, decimal inches, yards, meters, centimeters, millimeters, board feet, square, and cubic dimensions. Converts to and from any dimensional format. 4 built-in memories stores constants or accumulates values in any dimensional format. Authentic solutions for rafters and right angles, hips, valleys, wall studs, concrete square ups, and slopes. Stairway key finds risers, treads, riser height, and tread width. Circles, arcs, and inclines, in addition to many more specific functions. Paperless tape remembers last 20 entries. Boxed.