Advanced construction-Math Calculator with Full Trigonometric function for Building Professionals. For: Builders - Contractors - Engineers - Architects - Draftspersons. The Construction Master Pro Trig Feet-Inch-Fraction calculator provides the building professional with complete trigonometric solutions. It sets the industry standard as the most powerful and advanced construction-math calculator ever developed. with new built-in solutions and expanded preference selection you easily determine precise angel measurements and solve most complex design and construction math problems. Includes: Protective Hard slide Cover. Easy-to-follow User's guide. handy Pocket Reference Guide. Long-Life batteries (2) LR-44. Full One=Year Limited Warranty. English and Spanish User's Guide CD-ROM with Video.