Features:

• Financial calculator designed for construction professionals
• Performs common building formulas; area and volume calculations; works in various units, English/metric
• Plastic back, aluminum front, soft rubbed buttons
• Includes 2 3-volt lithium batteries, user guide, quick reference guide, protective slide cover
• 5.6 by 3 by 1/2 inches; display dimensions 0.86 by 2-1/2 inches; 3.2 ounces; 1-year warranty

Editor Reviews:

Product Description:
Master Pro, Advanced Construction Calculator, Works In & Converts Between All Building Dimensional Formats, Custom Set Fractions, Includes Protective Hard Case, User Guide, Field Guide & Long Life Batteries.

Rating : - if your in construction you need one
stairs check, pitch check, volume check, doing it all in fractions check...just makes life easier even if you don't do rafters or loading equations...I bought the set that you get a CD with a compter program for your desktop also....lets me leave the calc in the truck so i have her with me when I need her