For Use By Contractors, Estimators, Builders, Framers, Remodelers, Renovators, Product Details Product Description The Construction Master is and has been the industry standard for carpenters and craftsmen for over 30 years. Its use is taught in apprenticeship and training programs at the high-school, college, union and industry level across our country and beyond. An entire generation of framers and stick-builders grew up using it and advising us on new capabilities they wanted built-in. Building materials and techniques have changed over the years but geometry and the need to work quickly and accurately with dimensions is as important and difficult as ever. Put the time-tested Construction Master Pro on your next project and you?ll be glad you did. Amazon.com The construction master pro (model 4065) from Calculated Industries sets the industry standard for advanced construction-math calculators. Offering powerful built-in solutions and expanded preference settings, it's perfect for completing layouts, bids, and estimates as well as helping to save time and money by helping you figure out the right amount of needed materials. It's ideal for or contractors, estimators, architects, builders, framers, engineers, concrete/foundation contractors, draftspersons, and more. Ideal for completing layouts, bids, and estimates (view larger). Quick, Accurate Solutions in the Field You'll be able to work in and convert between all building dimensional formats--yards, feet-inch-fractions and metric--including area and volume. The construction master pro includes a number of built-in time-saving functions, including calculations for risers, treads, stringer length, and incline angle; how many 4 by 8, 4 by 9 or 4 by 12 sheets are needed to cover an area; jack rafter results for regular and irregular pitch roof; determining number of on-center studs for an entered length; and right angles. It also offers advanced solutions for circles, arches, columns, cones, pillars, windows and post-holes arcs, circumference, and segments. Handheld Convenience The construction master pro also includes the ability to custom define your preferences (such as fractional settings), a "paperless" tape that lets you review the previous 20 entries to double-check your totals, and accumulating memory with three additional memory storage locations. It's powered by a two 1.5-volt batteries (LR-44/A76), and the Construction Master Pro has an auto shut-off feature that turns the calculator off after about 8 to 12 minutes of non-use. The 11-digit display measures 2.5 inches by .625 inches. Overall, the calculator measures 5.6 inches by 3 inches by .6 inches, and weighs 4.5 ounces. It's backed by a one-year limited warranty. What's in the Box One Calculated Industries 4065 construction master pro calculator, Armadillo Gear protective cover, pocket reference guide in English and Spanish, and batteries. 4065 Construction Master Pro Calculator At a Glance: Work in and convert between all building dimensional formats Perfect for completing layouts, plans, bids, and estimates Large 11-digit display Powered by two LR-44/A76 batteries One-year limited warranty SOLVE ALL YOUR DIMENSIONAL MATH quickly and accurately with the award-winning CM Pro construction calculator?s powerful built-in solutions for completing layouts, plans, bids, estimates and more, directly in the building units you prefer LETS YOU EFFORTLESSLY WORK IN AND CONVERT between all common building dimension formats: feet-inch-fractions, decimal feet-inches, yards and metric -- including area and volume. Plus weight-per-volume and D:M:S to decimal degree conversions too TIME-SAVING BUILT-IN FUNCTIONS for right angles give you instant solutions for square-ups, rafters (hip, valley, jacks), rake-walls, slopes, angles and more. Plus complete stair layout, advanced solutions for arcs, arches, circles, columns and more PREVENTS COSTLY MATERIAL WASTE with built-in solutions for roofing, drywall, studs, blocks, concrete footings and board-feet lumber estimating. Plus compound miter functions help you avoid errors when working with crown molding and other pricey millwork Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.