From the Manufacturer
The Construction Master® Pro Desktop is loaded with the most advanced features asked for by construction pros. Calculate and convert, simply and accurately, in yards, feet-inch-fraction and metric dimensions including square and cubic. Full trigonometric functions sine, cosine tangent, arcsine, arccosine and arctangent simplify complex construction math. Quickly solve for stairs, rafters, hip/valleys and rake walls. Get instant cutting angles, cheek, level and plumb and stud length for any on-center spacing. Save time and improve accuracy with block and footing keys. circular function finds arches, columns, windows, pillars and post-hole dimensions. The Pro DT has weight-per-volume and D:M:S to decimal degree conversion capability. An automatic backspace key, preference function for user-defined options, three built-in memories and a "paperless" tape are valuable features for the preparation of bids and estimates. It's perfect for plan and specification checks. The Construction Master® Pro Desktop is the most complete construction calculator ever developed and is designed specifically to increase efficiency, save money and ensure more job-winning bids and estimates. The Construction Master® Pro DT is built with a jumbo, multi-position tilt display and large adjustable LCD display. It comes with an easy-to-follow full size user's manual and 1-year warranty. Construction Master was recognized with the #1 Quality Rating for 'Builders Instruments' in 2002 by Builder's Magazine.